Added Ent and user model.

Makefile

@@ -0,0 +1,4 @@
+.PHONY: pg
+
+pg:
+	 psql postgresql://admin:admin@localhost:5432/app

container/container.go

@@ -2,21 +2,27 @@ package container
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 
+	"entgo.io/ent/dialect"
+	entsql "entgo.io/ent/dialect/sql"
 	"github.com/eko/gocache/v2/cache"
 	"github.com/eko/gocache/v2/store"
 	"github.com/go-redis/redis/v8"
+	_ "github.com/jackc/pgx/v4/stdlib"
 	"github.com/labstack/echo/v4"
 
 	"goweb/config"
+	"goweb/ent"
 )
 
 type Container struct {
-	Web    *echo.Echo
-	Config *config.Config
-	Cache  *cache.Cache
-	// DB
+	Web      *echo.Echo
+	Config   *config.Config
+	Cache    *cache.Cache
+	Database *sql.DB
+	Ent      *ent.Client
 }
 
 func NewContainer() *Container {
@@ -28,8 +34,7 @@ func NewContainer() *Container {
 	// Configuration
 	cfg, err := config.GetConfig()
 	if err != nil {
-		c.Web.Logger.Error(err)
-		c.Web.Logger.Fatal("Failed to load configuration")
+		c.Web.Logger.Fatalf("failed to load configuration: %v", err)
 	}
 	c.Config = &cfg
 
@@ -39,11 +44,29 @@ func NewContainer() *Container {
 		Password: c.Config.Cache.Password,
 	})
 	if _, err = cacheClient.Ping(context.Background()).Result(); err != nil {
-		c.Web.Logger.Error(err)
-		c.Web.Logger.Fatal("Failed to connect to cache server")
+		c.Web.Logger.Fatalf("failed to connect to cache server: %v", err)
 	}
 	cacheStore := store.NewRedis(cacheClient, nil)
 	c.Cache = cache.New(cacheStore)
 
+	// Database
+	addr := fmt.Sprintf("postgresql://%s:%s@%s/%s",
+		c.Config.Database.User,
+		c.Config.Database.Password,
+		c.Config.Database.Hostname,
+		c.Config.Database.Database,
+	)
+	c.Database, err = sql.Open("pgx", addr)
+	if err != nil {
+		c.Web.Logger.Fatalf("failed to connect to database: %v", err)
+	}
+
+	// Ent
+	drv := entsql.OpenDB(dialect.Postgres, c.Database)
+	c.Ent = ent.NewClient(ent.Driver(drv))
+	if err := c.Ent.Schema.Create(context.Background()); err != nil {
+		c.Web.Logger.Fatalf("failed to create database schema: %v", err)
+	}
+
 	return &c
 }

controllers/register.go

@@ -20,6 +20,18 @@ func (r *Register) Get(c echo.Context) error {
 }
 
 func (r *Register) Post(c echo.Context) error {
+	u, err := r.Container.Ent.User.
+		Create().
+		SetUsername(c.FormValue("username")).
+		SetPassword(c.FormValue("password")).
+		Save(c.Request().Context())
+
+	if err != nil {
+		c.Logger().Error(err)
+	} else {
+		c.Logger().Infof("user created: %s", u.Username)
+	}
+
 	msg.Danger(c, "Registration is currently disabled.")
 	return r.Get(c)
 }

ent/client.go

@@ -0,0 +1,212 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"goweb/ent/migrate"
+
+	"goweb/ent/user"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+)
+
+// Client is the client that holds all ent builders.
+type Client struct {
+	config
+	// Schema is the client for creating, migrating and dropping schema.
+	Schema *migrate.Schema
+	// User is the client for interacting with the User builders.
+	User *UserClient
+}
+
+// NewClient creates a new client configured with the given options.
+func NewClient(opts ...Option) *Client {
+	cfg := config{log: log.Println, hooks: &hooks{}}
+	cfg.options(opts...)
+	client := &Client{config: cfg}
+	client.init()
+	return client
+}
+
+func (c *Client) init() {
+	c.Schema = migrate.NewSchema(c.driver)
+	c.User = NewUserClient(c.config)
+}
+
+// Open opens a database/sql.DB specified by the driver name and
+// the data source name, and returns a new client attached to it.
+// Optional parameters can be added for configuring the client.
+func Open(driverName, dataSourceName string, options ...Option) (*Client, error) {
+	switch driverName {
+	case dialect.MySQL, dialect.Postgres, dialect.SQLite:
+		drv, err := sql.Open(driverName, dataSourceName)
+		if err != nil {
+			return nil, err
+		}
+		return NewClient(append(options, Driver(drv))...), nil
+	default:
+		return nil, fmt.Errorf("unsupported driver: %q", driverName)
+	}
+}
+
+// Tx returns a new transactional client. The provided context
+// is used until the transaction is committed or rolled back.
+func (c *Client) Tx(ctx context.Context) (*Tx, error) {
+	if _, ok := c.driver.(*txDriver); ok {
+		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
+	}
+	tx, err := newTx(ctx, c.driver)
+	if err != nil {
+		return nil, fmt.Errorf("ent: starting a transaction: %w", err)
+	}
+	cfg := c.config
+	cfg.driver = tx
+	return &Tx{
+		ctx:    ctx,
+		config: cfg,
+		User:   NewUserClient(cfg),
+	}, nil
+}
+
+// BeginTx returns a transactional client with specified options.
+func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) {
+	if _, ok := c.driver.(*txDriver); ok {
+		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
+	}
+	tx, err := c.driver.(interface {
+		BeginTx(context.Context, *sql.TxOptions) (dialect.Tx, error)
+	}).BeginTx(ctx, opts)
+	if err != nil {
+		return nil, fmt.Errorf("ent: starting a transaction: %w", err)
+	}
+	cfg := c.config
+	cfg.driver = &txDriver{tx: tx, drv: c.driver}
+	return &Tx{
+		config: cfg,
+		User:   NewUserClient(cfg),
+	}, nil
+}
+
+// Debug returns a new debug-client. It's used to get verbose logging on specific operations.
+//
+//	client.Debug().
+//		User.
+//		Query().
+//		Count(ctx)
+//
+func (c *Client) Debug() *Client {
+	if c.debug {
+		return c
+	}
+	cfg := c.config
+	cfg.driver = dialect.Debug(c.driver, c.log)
+	client := &Client{config: cfg}
+	client.init()
+	return client
+}
+
+// Close closes the database connection and prevents new queries from starting.
+func (c *Client) Close() error {
+	return c.driver.Close()
+}
+
+// Use adds the mutation hooks to all the entity clients.
+// In order to add hooks to a specific client, call: `client.Node.Use(...)`.
+func (c *Client) Use(hooks ...Hook) {
+	c.User.Use(hooks...)
+}
+
+// UserClient is a client for the User schema.
+type UserClient struct {
+	config
+}
+
+// NewUserClient returns a client for the User from the given config.
+func NewUserClient(c config) *UserClient {
+	return &UserClient{config: c}
+}
+
+// Use adds a list of mutation hooks to the hooks stack.
+// A call to `Use(f, g, h)` equals to `user.Hooks(f(g(h())))`.
+func (c *UserClient) Use(hooks ...Hook) {
+	c.hooks.User = append(c.hooks.User, hooks...)
+}
+
+// Create returns a create builder for User.
+func (c *UserClient) Create() *UserCreate {
+	mutation := newUserMutation(c.config, OpCreate)
+	return &UserCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// CreateBulk returns a builder for creating a bulk of User entities.
+func (c *UserClient) CreateBulk(builders ...*UserCreate) *UserCreateBulk {
+	return &UserCreateBulk{config: c.config, builders: builders}
+}
+
+// Update returns an update builder for User.
+func (c *UserClient) Update() *UserUpdate {
+	mutation := newUserMutation(c.config, OpUpdate)
+	return &UserUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOne returns an update builder for the given entity.
+func (c *UserClient) UpdateOne(u *User) *UserUpdateOne {
+	mutation := newUserMutation(c.config, OpUpdateOne, withUser(u))
+	return &UserUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOneID returns an update builder for the given id.
+func (c *UserClient) UpdateOneID(id int) *UserUpdateOne {
+	mutation := newUserMutation(c.config, OpUpdateOne, withUserID(id))
+	return &UserUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// Delete returns a delete builder for User.
+func (c *UserClient) Delete() *UserDelete {
+	mutation := newUserMutation(c.config, OpDelete)
+	return &UserDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// DeleteOne returns a delete builder for the given entity.
+func (c *UserClient) DeleteOne(u *User) *UserDeleteOne {
+	return c.DeleteOneID(u.ID)
+}
+
+// DeleteOneID returns a delete builder for the given id.
+func (c *UserClient) DeleteOneID(id int) *UserDeleteOne {
+	builder := c.Delete().Where(user.ID(id))
+	builder.mutation.id = &id
+	builder.mutation.op = OpDeleteOne
+	return &UserDeleteOne{builder}
+}
+
+// Query returns a query builder for User.
+func (c *UserClient) Query() *UserQuery {
+	return &UserQuery{
+		config: c.config,
+	}
+}
+
+// Get returns a User entity by its id.
+func (c *UserClient) Get(ctx context.Context, id int) (*User, error) {
+	return c.Query().Where(user.ID(id)).Only(ctx)
+}
+
+// GetX is like Get, but panics if an error occurs.
+func (c *UserClient) GetX(ctx context.Context, id int) *User {
+	obj, err := c.Get(ctx, id)
+	if err != nil {
+		panic(err)
+	}
+	return obj
+}
+
+// Hooks returns the client hooks.
+func (c *UserClient) Hooks() []Hook {
+	return c.hooks.User
+}

ent/config.go

@@ -0,0 +1,59 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+)
+
+// Option function to configure the client.
+type Option func(*config)
+
+// Config is the configuration for the client and its builder.
+type config struct {
+	// driver used for executing database requests.
+	driver dialect.Driver
+	// debug enable a debug logging.
+	debug bool
+	// log used for logging on debug mode.
+	log func(...interface{})
+	// hooks to execute on mutations.
+	hooks *hooks
+}
+
+// hooks per client, for fast access.
+type hooks struct {
+	User []ent.Hook
+}
+
+// Options applies the options on the config object.
+func (c *config) options(opts ...Option) {
+	for _, opt := range opts {
+		opt(c)
+	}
+	if c.debug {
+		c.driver = dialect.Debug(c.driver, c.log)
+	}
+}
+
+// Debug enables debug logging on the ent.Driver.
+func Debug() Option {
+	return func(c *config) {
+		c.debug = true
+	}
+}
+
+// Log sets the logging function for debug mode.
+func Log(fn func(...interface{})) Option {
+	return func(c *config) {
+		c.log = fn
+	}
+}
+
+// Driver configures the client driver.
+func Driver(driver dialect.Driver) Option {
+	return func(c *config) {
+		c.driver = driver
+	}
+}

ent/context.go

@@ -0,0 +1,33 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+)
+
+type clientCtxKey struct{}
+
+// FromContext returns a Client stored inside a context, or nil if there isn't one.
+func FromContext(ctx context.Context) *Client {
+	c, _ := ctx.Value(clientCtxKey{}).(*Client)
+	return c
+}
+
+// NewContext returns a new context with the given Client attached.
+func NewContext(parent context.Context, c *Client) context.Context {
+	return context.WithValue(parent, clientCtxKey{}, c)
+}
+
+type txCtxKey struct{}
+
+// TxFromContext returns a Tx stored inside a context, or nil if there isn't one.
+func TxFromContext(ctx context.Context) *Tx {
+	tx, _ := ctx.Value(txCtxKey{}).(*Tx)
+	return tx
+}
+
+// NewTxContext returns a new context with the given Tx attached.
+func NewTxContext(parent context.Context, tx *Tx) context.Context {
+	return context.WithValue(parent, txCtxKey{}, tx)
+}

ent/ent.go

@@ -0,0 +1,259 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"errors"
+	"fmt"
+	"goweb/ent/user"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+)
+
+// ent aliases to avoid import conflicts in user's code.
+type (
+	Op         = ent.Op
+	Hook       = ent.Hook
+	Value      = ent.Value
+	Query      = ent.Query
+	Policy     = ent.Policy
+	Mutator    = ent.Mutator
+	Mutation   = ent.Mutation
+	MutateFunc = ent.MutateFunc
+)
+
+// OrderFunc applies an ordering on the sql selector.
+type OrderFunc func(*sql.Selector)
+
+// columnChecker returns a function indicates if the column exists in the given column.
+func columnChecker(table string) func(string) error {
+	checks := map[string]func(string) bool{
+		user.Table: user.ValidColumn,
+	}
+	check, ok := checks[table]
+	if !ok {
+		return func(string) error {
+			return fmt.Errorf("unknown table %q", table)
+		}
+	}
+	return func(column string) error {
+		if !check(column) {
+			return fmt.Errorf("unknown column %q for table %q", column, table)
+		}
+		return nil
+	}
+}
+
+// Asc applies the given fields in ASC order.
+func Asc(fields ...string) OrderFunc {
+	return func(s *sql.Selector) {
+		check := columnChecker(s.TableName())
+		for _, f := range fields {
+			if err := check(f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("ent: %w", err)})
+			}
+			s.OrderBy(sql.Asc(s.C(f)))
+		}
+	}
+}
+
+// Desc applies the given fields in DESC order.
+func Desc(fields ...string) OrderFunc {
+	return func(s *sql.Selector) {
+		check := columnChecker(s.TableName())
+		for _, f := range fields {
+			if err := check(f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("ent: %w", err)})
+			}
+			s.OrderBy(sql.Desc(s.C(f)))
+		}
+	}
+}
+
+// AggregateFunc applies an aggregation step on the group-by traversal/selector.
+type AggregateFunc func(*sql.Selector) string
+
+// As is a pseudo aggregation function for renaming another other functions with custom names. For example:
+//
+//	GroupBy(field1, field2).
+//	Aggregate(ent.As(ent.Sum(field1), "sum_field1"), (ent.As(ent.Sum(field2), "sum_field2")).
+//	Scan(ctx, &v)
+//
+func As(fn AggregateFunc, end string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.As(fn(s), end)
+	}
+}
+
+// Count applies the "count" aggregation function on each group.
+func Count() AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.Count("*")
+	}
+}
+
+// Max applies the "max" aggregation function on the given field of each group.
+func Max(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Max(s.C(field))
+	}
+}
+
+// Mean applies the "mean" aggregation function on the given field of each group.
+func Mean(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Avg(s.C(field))
+	}
+}
+
+// Min applies the "min" aggregation function on the given field of each group.
+func Min(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Min(s.C(field))
+	}
+}
+
+// Sum applies the "sum" aggregation function on the given field of each group.
+func Sum(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		check := columnChecker(s.TableName())
+		if err := check(field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("ent: %w", err)})
+			return ""
+		}
+		return sql.Sum(s.C(field))
+	}
+}
+
+// ValidationError returns when validating a field fails.
+type ValidationError struct {
+	Name string // Field or edge name.
+	err  error
+}
+
+// Error implements the error interface.
+func (e *ValidationError) Error() string {
+	return e.err.Error()
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ValidationError) Unwrap() error {
+	return e.err
+}
+
+// IsValidationError returns a boolean indicating whether the error is a validation error.
+func IsValidationError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ValidationError
+	return errors.As(err, &e)
+}
+
+// NotFoundError returns when trying to fetch a specific entity and it was not found in the database.
+type NotFoundError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotFoundError) Error() string {
+	return "ent: " + e.label + " not found"
+}
+
+// IsNotFound returns a boolean indicating whether the error is a not found error.
+func IsNotFound(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotFoundError
+	return errors.As(err, &e)
+}
+
+// MaskNotFound masks not found error.
+func MaskNotFound(err error) error {
+	if IsNotFound(err) {
+		return nil
+	}
+	return err
+}
+
+// NotSingularError returns when trying to fetch a singular entity and more then one was found in the database.
+type NotSingularError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotSingularError) Error() string {
+	return "ent: " + e.label + " not singular"
+}
+
+// IsNotSingular returns a boolean indicating whether the error is a not singular error.
+func IsNotSingular(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotSingularError
+	return errors.As(err, &e)
+}
+
+// NotLoadedError returns when trying to get a node that was not loaded by the query.
+type NotLoadedError struct {
+	edge string
+}
+
+// Error implements the error interface.
+func (e *NotLoadedError) Error() string {
+	return "ent: " + e.edge + " edge was not loaded"
+}
+
+// IsNotLoaded returns a boolean indicating whether the error is a not loaded error.
+func IsNotLoaded(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotLoadedError
+	return errors.As(err, &e)
+}
+
+// ConstraintError returns when trying to create/update one or more entities and
+// one or more of their constraints failed. For example, violation of edge or
+// field uniqueness.
+type ConstraintError struct {
+	msg  string
+	wrap error
+}
+
+// Error implements the error interface.
+func (e ConstraintError) Error() string {
+	return "ent: constraint failed: " + e.msg
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ConstraintError) Unwrap() error {
+	return e.wrap
+}
+
+// IsConstraintError returns a boolean indicating whether the error is a constraint failure.
+func IsConstraintError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ConstraintError
+	return errors.As(err, &e)
+}

ent/enttest/enttest.go

@@ -0,0 +1,77 @@
+// Code generated by entc, DO NOT EDIT.
+
+package enttest
+
+import (
+	"context"
+	"goweb/ent"
+	// required by schema hooks.
+	_ "goweb/ent/runtime"
+
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+type (
+	// TestingT is the interface that is shared between
+	// testing.T and testing.B and used by enttest.
+	TestingT interface {
+		FailNow()
+		Error(...interface{})
+	}
+
+	// Option configures client creation.
+	Option func(*options)
+
+	options struct {
+		opts        []ent.Option
+		migrateOpts []schema.MigrateOption
+	}
+)
+
+// WithOptions forwards options to client creation.
+func WithOptions(opts ...ent.Option) Option {
+	return func(o *options) {
+		o.opts = append(o.opts, opts...)
+	}
+}
+
+// WithMigrateOptions forwards options to auto migration.
+func WithMigrateOptions(opts ...schema.MigrateOption) Option {
+	return func(o *options) {
+		o.migrateOpts = append(o.migrateOpts, opts...)
+	}
+}
+
+func newOptions(opts []Option) *options {
+	o := &options{}
+	for _, opt := range opts {
+		opt(o)
+	}
+	return o
+}
+
+// Open calls ent.Open and auto-run migration.
+func Open(t TestingT, driverName, dataSourceName string, opts ...Option) *ent.Client {
+	o := newOptions(opts)
+	c, err := ent.Open(driverName, dataSourceName, o.opts...)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	if err := c.Schema.Create(context.Background(), o.migrateOpts...); err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	return c
+}
+
+// NewClient calls ent.NewClient and auto-run migration.
+func NewClient(t TestingT, opts ...Option) *ent.Client {
+	o := newOptions(opts)
+	c := ent.NewClient(o.opts...)
+	if err := c.Schema.Create(context.Background(), o.migrateOpts...); err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	return c
+}

ent/generate.go

@@ -0,0 +1,3 @@
+package ent
+
+//go:generate go run -mod=mod entgo.io/ent/cmd/ent generate ./schema

ent/hook/hook.go

@@ -0,0 +1,203 @@
+// Code generated by entc, DO NOT EDIT.
+
+package hook
+
+import (
+	"context"
+	"fmt"
+	"goweb/ent"
+)
+
+// The UserFunc type is an adapter to allow the use of ordinary
+// function as User mutator.
+type UserFunc func(context.Context, *ent.UserMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f UserFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	mv, ok := m.(*ent.UserMutation)
+	if !ok {
+		return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.UserMutation", m)
+	}
+	return f(ctx, mv)
+}
+
+// Condition is a hook condition function.
+type Condition func(context.Context, ent.Mutation) bool
+
+// And groups conditions with the AND operator.
+func And(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		if !first(ctx, m) || !second(ctx, m) {
+			return false
+		}
+		for _, cond := range rest {
+			if !cond(ctx, m) {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// Or groups conditions with the OR operator.
+func Or(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		if first(ctx, m) || second(ctx, m) {
+			return true
+		}
+		for _, cond := range rest {
+			if cond(ctx, m) {
+				return true
+			}
+		}
+		return false
+	}
+}
+
+// Not negates a given condition.
+func Not(cond Condition) Condition {
+	return func(ctx context.Context, m ent.Mutation) bool {
+		return !cond(ctx, m)
+	}
+}
+
+// HasOp is a condition testing mutation operation.
+func HasOp(op ent.Op) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		return m.Op().Is(op)
+	}
+}
+
+// HasAddedFields is a condition validating `.AddedField` on fields.
+func HasAddedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if _, exists := m.AddedField(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.AddedField(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasClearedFields is a condition validating `.FieldCleared` on fields.
+func HasClearedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if exists := m.FieldCleared(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if exists := m.FieldCleared(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasFields is a condition validating `.Field` on fields.
+func HasFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m ent.Mutation) bool {
+		if _, exists := m.Field(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.Field(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// If executes the given hook under condition.
+//
+//	hook.If(ComputeAverage, And(HasFields(...), HasAddedFields(...)))
+//
+func If(hk ent.Hook, cond Condition) ent.Hook {
+	return func(next ent.Mutator) ent.Mutator {
+		return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+			if cond(ctx, m) {
+				return hk(next).Mutate(ctx, m)
+			}
+			return next.Mutate(ctx, m)
+		})
+	}
+}
+
+// On executes the given hook only for the given operation.
+//
+//	hook.On(Log, ent.Delete|ent.Create)
+//
+func On(hk ent.Hook, op ent.Op) ent.Hook {
+	return If(hk, HasOp(op))
+}
+
+// Unless skips the given hook only for the given operation.
+//
+//	hook.Unless(Log, ent.Update|ent.UpdateOne)
+//
+func Unless(hk ent.Hook, op ent.Op) ent.Hook {
+	return If(hk, Not(HasOp(op)))
+}
+
+// FixedError is a hook returning a fixed error.
+func FixedError(err error) ent.Hook {
+	return func(ent.Mutator) ent.Mutator {
+		return ent.MutateFunc(func(context.Context, ent.Mutation) (ent.Value, error) {
+			return nil, err
+		})
+	}
+}
+
+// Reject returns a hook that rejects all operations that match op.
+//
+//	func (T) Hooks() []ent.Hook {
+//		return []ent.Hook{
+//			Reject(ent.Delete|ent.Update),
+//		}
+//	}
+//
+func Reject(op ent.Op) ent.Hook {
+	hk := FixedError(fmt.Errorf("%s operation is not allowed", op))
+	return On(hk, op)
+}
+
+// Chain acts as a list of hooks and is effectively immutable.
+// Once created, it will always hold the same set of hooks in the same order.
+type Chain struct {
+	hooks []ent.Hook
+}
+
+// NewChain creates a new chain of hooks.
+func NewChain(hooks ...ent.Hook) Chain {
+	return Chain{append([]ent.Hook(nil), hooks...)}
+}
+
+// Hook chains the list of hooks and returns the final hook.
+func (c Chain) Hook() ent.Hook {
+	return func(mutator ent.Mutator) ent.Mutator {
+		for i := len(c.hooks) - 1; i >= 0; i-- {
+			mutator = c.hooks[i](mutator)
+		}
+		return mutator
+	}
+}
+
+// Append extends a chain, adding the specified hook
+// as the last ones in the mutation flow.
+func (c Chain) Append(hooks ...ent.Hook) Chain {
+	newHooks := make([]ent.Hook, 0, len(c.hooks)+len(hooks))
+	newHooks = append(newHooks, c.hooks...)
+	newHooks = append(newHooks, hooks...)
+	return Chain{newHooks}
+}
+
+// Extend extends a chain, adding the specified chain
+// as the last ones in the mutation flow.
+func (c Chain) Extend(chain Chain) Chain {
+	return c.Append(chain.hooks...)
+}

ent/migrate/migrate.go

@@ -0,0 +1,72 @@
+// Code generated by entc, DO NOT EDIT.
+
+package migrate
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+var (
+	// WithGlobalUniqueID sets the universal ids options to the migration.
+	// If this option is enabled, ent migration will allocate a 1<<32 range
+	// for the ids of each entity (table).
+	// Note that this option cannot be applied on tables that already exist.
+	WithGlobalUniqueID = schema.WithGlobalUniqueID
+	// WithDropColumn sets the drop column option to the migration.
+	// If this option is enabled, ent migration will drop old columns
+	// that were used for both fields and edges. This defaults to false.
+	WithDropColumn = schema.WithDropColumn
+	// WithDropIndex sets the drop index option to the migration.
+	// If this option is enabled, ent migration will drop old indexes
+	// that were defined in the schema. This defaults to false.
+	// Note that unique constraints are defined using `UNIQUE INDEX`,
+	// and therefore, it's recommended to enable this option to get more
+	// flexibility in the schema changes.
+	WithDropIndex = schema.WithDropIndex
+	// WithFixture sets the foreign-key renaming option to the migration when upgrading
+	// ent from v0.1.0 (issue-#285). Defaults to false.
+	WithFixture = schema.WithFixture
+	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
+	WithForeignKeys = schema.WithForeignKeys
+)
+
+// Schema is the API for creating, migrating and dropping a schema.
+type Schema struct {
+	drv         dialect.Driver
+	universalID bool
+}
+
+// NewSchema creates a new schema client.
+func NewSchema(drv dialect.Driver) *Schema { return &Schema{drv: drv} }
+
+// Create creates all schema resources.
+func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, Tables...)
+}
+
+// WriteTo writes the schema changes to w instead of running them against the database.
+//
+// 	if err := client.Schema.WriteTo(context.Background(), os.Stdout); err != nil {
+//		log.Fatal(err)
+// 	}
+//
+func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error {
+	drv := &schema.WriteDriver{
+		Writer: w,
+		Driver: s.drv,
+	}
+	migrate, err := schema.NewMigrate(drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, Tables...)
+}

ent/migrate/schema.go

@@ -0,0 +1,31 @@
+// Code generated by entc, DO NOT EDIT.
+
+package migrate
+
+import (
+	"entgo.io/ent/dialect/sql/schema"
+	"entgo.io/ent/schema/field"
+)
+
+var (
+	// UsersColumns holds the columns for the "users" table.
+	UsersColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "username", Type: field.TypeString, Unique: true},
+		{Name: "password", Type: field.TypeString},
+		{Name: "created_at", Type: field.TypeTime},
+	}
+	// UsersTable holds the schema information for the "users" table.
+	UsersTable = &schema.Table{
+		Name:       "users",
+		Columns:    UsersColumns,
+		PrimaryKey: []*schema.Column{UsersColumns[0]},
+	}
+	// Tables holds all the tables in the schema.
+	Tables = []*schema.Table{
+		UsersTable,
+	}
+)
+
+func init() {
+}

ent/mutation.go

@@ -0,0 +1,426 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"goweb/ent/predicate"
+	"goweb/ent/user"
+	"sync"
+	"time"
+
+	"entgo.io/ent"
+)
+
+const (
+	// Operation types.
+	OpCreate    = ent.OpCreate
+	OpDelete    = ent.OpDelete
+	OpDeleteOne = ent.OpDeleteOne
+	OpUpdate    = ent.OpUpdate
+	OpUpdateOne = ent.OpUpdateOne
+
+	// Node types.
+	TypeUser = "User"
+)
+
+// UserMutation represents an operation that mutates the User nodes in the graph.
+type UserMutation struct {
+	config
+	op            Op
+	typ           string
+	id            *int
+	username      *string
+	password      *string
+	created_at    *time.Time
+	clearedFields map[string]struct{}
+	done          bool
+	oldValue      func(context.Context) (*User, error)
+	predicates    []predicate.User
+}
+
+var _ ent.Mutation = (*UserMutation)(nil)
+
+// userOption allows management of the mutation configuration using functional options.
+type userOption func(*UserMutation)
+
+// newUserMutation creates new mutation for the User entity.
+func newUserMutation(c config, op Op, opts ...userOption) *UserMutation {
+	m := &UserMutation{
+		config:        c,
+		op:            op,
+		typ:           TypeUser,
+		clearedFields: make(map[string]struct{}),
+	}
+	for _, opt := range opts {
+		opt(m)
+	}
+	return m
+}
+
+// withUserID sets the ID field of the mutation.
+func withUserID(id int) userOption {
+	return func(m *UserMutation) {
+		var (
+			err   error
+			once  sync.Once
+			value *User
+		)
+		m.oldValue = func(ctx context.Context) (*User, error) {
+			once.Do(func() {
+				if m.done {
+					err = fmt.Errorf("querying old values post mutation is not allowed")
+				} else {
+					value, err = m.Client().User.Get(ctx, id)
+				}
+			})
+			return value, err
+		}
+		m.id = &id
+	}
+}
+
+// withUser sets the old User of the mutation.
+func withUser(node *User) userOption {
+	return func(m *UserMutation) {
+		m.oldValue = func(context.Context) (*User, error) {
+			return node, nil
+		}
+		m.id = &node.ID
+	}
+}
+
+// Client returns a new `ent.Client` from the mutation. If the mutation was
+// executed in a transaction (ent.Tx), a transactional client is returned.
+func (m UserMutation) Client() *Client {
+	client := &Client{config: m.config}
+	client.init()
+	return client
+}
+
+// Tx returns an `ent.Tx` for mutations that were executed in transactions;
+// it returns an error otherwise.
+func (m UserMutation) Tx() (*Tx, error) {
+	if _, ok := m.driver.(*txDriver); !ok {
+		return nil, fmt.Errorf("ent: mutation is not running in a transaction")
+	}
+	tx := &Tx{config: m.config}
+	tx.init()
+	return tx, nil
+}
+
+// ID returns the ID value in the mutation. Note that the ID is only available
+// if it was provided to the builder or after it was returned from the database.
+func (m *UserMutation) ID() (id int, exists bool) {
+	if m.id == nil {
+		return
+	}
+	return *m.id, true
+}
+
+// SetUsername sets the "username" field.
+func (m *UserMutation) SetUsername(s string) {
+	m.username = &s
+}
+
+// Username returns the value of the "username" field in the mutation.
+func (m *UserMutation) Username() (r string, exists bool) {
+	v := m.username
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldUsername returns the old "username" field's value of the User entity.
+// If the User object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UserMutation) OldUsername(ctx context.Context) (v string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, fmt.Errorf("OldUsername is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, fmt.Errorf("OldUsername requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldUsername: %w", err)
+	}
+	return oldValue.Username, nil
+}
+
+// ResetUsername resets all changes to the "username" field.
+func (m *UserMutation) ResetUsername() {
+	m.username = nil
+}
+
+// SetPassword sets the "password" field.
+func (m *UserMutation) SetPassword(s string) {
+	m.password = &s
+}
+
+// Password returns the value of the "password" field in the mutation.
+func (m *UserMutation) Password() (r string, exists bool) {
+	v := m.password
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldPassword returns the old "password" field's value of the User entity.
+// If the User object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UserMutation) OldPassword(ctx context.Context) (v string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, fmt.Errorf("OldPassword is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, fmt.Errorf("OldPassword requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldPassword: %w", err)
+	}
+	return oldValue.Password, nil
+}
+
+// ResetPassword resets all changes to the "password" field.
+func (m *UserMutation) ResetPassword() {
+	m.password = nil
+}
+
+// SetCreatedAt sets the "created_at" field.
+func (m *UserMutation) SetCreatedAt(t time.Time) {
+	m.created_at = &t
+}
+
+// CreatedAt returns the value of the "created_at" field in the mutation.
+func (m *UserMutation) CreatedAt() (r time.Time, exists bool) {
+	v := m.created_at
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldCreatedAt returns the old "created_at" field's value of the User entity.
+// If the User object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UserMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, fmt.Errorf("OldCreatedAt is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, fmt.Errorf("OldCreatedAt requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldCreatedAt: %w", err)
+	}
+	return oldValue.CreatedAt, nil
+}
+
+// ResetCreatedAt resets all changes to the "created_at" field.
+func (m *UserMutation) ResetCreatedAt() {
+	m.created_at = nil
+}
+
+// Where appends a list predicates to the UserMutation builder.
+func (m *UserMutation) Where(ps ...predicate.User) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// Op returns the operation name.
+func (m *UserMutation) Op() Op {
+	return m.op
+}
+
+// Type returns the node type of this mutation (User).
+func (m *UserMutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *UserMutation) Fields() []string {
+	fields := make([]string, 0, 3)
+	if m.username != nil {
+		fields = append(fields, user.FieldUsername)
+	}
+	if m.password != nil {
+		fields = append(fields, user.FieldPassword)
+	}
+	if m.created_at != nil {
+		fields = append(fields, user.FieldCreatedAt)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *UserMutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case user.FieldUsername:
+		return m.Username()
+	case user.FieldPassword:
+		return m.Password()
+	case user.FieldCreatedAt:
+		return m.CreatedAt()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *UserMutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	switch name {
+	case user.FieldUsername:
+		return m.OldUsername(ctx)
+	case user.FieldPassword:
+		return m.OldPassword(ctx)
+	case user.FieldCreatedAt:
+		return m.OldCreatedAt(ctx)
+	}
+	return nil, fmt.Errorf("unknown User field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *UserMutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case user.FieldUsername:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetUsername(v)
+		return nil
+	case user.FieldPassword:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetPassword(v)
+		return nil
+	case user.FieldCreatedAt:
+		v, ok := value.(time.Time)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetCreatedAt(v)
+		return nil
+	}
+	return fmt.Errorf("unknown User field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *UserMutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *UserMutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *UserMutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown User numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *UserMutation) ClearedFields() []string {
+	return nil
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *UserMutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *UserMutation) ClearField(name string) error {
+	return fmt.Errorf("unknown User nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *UserMutation) ResetField(name string) error {
+	switch name {
+	case user.FieldUsername:
+		m.ResetUsername()
+		return nil
+	case user.FieldPassword:
+		m.ResetPassword()
+		return nil
+	case user.FieldCreatedAt:
+		m.ResetCreatedAt()
+		return nil
+	}
+	return fmt.Errorf("unknown User field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *UserMutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *UserMutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *UserMutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *UserMutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *UserMutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *UserMutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *UserMutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown User unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *UserMutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown User edge %s", name)
+}

ent/predicate/predicate.go

@@ -0,0 +1,10 @@
+// Code generated by entc, DO NOT EDIT.
+
+package predicate
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+// User is the predicate function for user builders.
+type User func(*sql.Selector)

ent/runtime.go

@@ -0,0 +1,21 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"goweb/ent/schema"
+	"goweb/ent/user"
+	"time"
+)
+
+// The init function reads all schema descriptors with runtime code
+// (default values, validators, hooks and policies) and stitches it
+// to their package variables.
+func init() {
+	userFields := schema.User{}.Fields()
+	_ = userFields
+	// userDescCreatedAt is the schema descriptor for created_at field.
+	userDescCreatedAt := userFields[2].Descriptor()
+	// user.DefaultCreatedAt holds the default value on creation for the created_at field.
+	user.DefaultCreatedAt = userDescCreatedAt.Default.(func() time.Time)
+}

ent/runtime/runtime.go

@@ -0,0 +1,10 @@
+// Code generated by entc, DO NOT EDIT.
+
+package runtime
+
+// The schema-stitching logic is generated in goweb/ent/runtime.go
+
+const (
+	Version = "v0.9.1"                                          // Version of ent codegen.
+	Sum     = "h1:IG8andyeD79GG24U8Q+1Y45hQXj6gY5evSBcva5gtBk=" // Sum of ent codegen.
+)

ent/schema/user.go

@@ -0,0 +1,31 @@
+package schema
+
+import (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/schema/field"
+)
+
+// User holds the schema definition for the User entity.
+type User struct {
+	ent.Schema
+}
+
+// Fields of the User.
+func (User) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("username").
+			Unique(),
+		field.String("password").
+			Sensitive(),
+		field.Time("created_at").
+			Default(time.Now).
+			Immutable(),
+	}
+}
+
+// Edges of the User.
+func (User) Edges() []ent.Edge {
+	return nil
+}

ent/tx.go

@@ -0,0 +1,210 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"sync"
+
+	"entgo.io/ent/dialect"
+)
+
+// Tx is a transactional client that is created by calling Client.Tx().
+type Tx struct {
+	config
+	// User is the client for interacting with the User builders.
+	User *UserClient
+
+	// lazily loaded.
+	client     *Client
+	clientOnce sync.Once
+
+	// completion callbacks.
+	mu         sync.Mutex
+	onCommit   []CommitHook
+	onRollback []RollbackHook
+
+	// ctx lives for the life of the transaction. It is
+	// the same context used by the underlying connection.
+	ctx context.Context
+}
+
+type (
+	// Committer is the interface that wraps the Committer method.
+	Committer interface {
+		Commit(context.Context, *Tx) error
+	}
+
+	// The CommitFunc type is an adapter to allow the use of ordinary
+	// function as a Committer. If f is a function with the appropriate
+	// signature, CommitFunc(f) is a Committer that calls f.
+	CommitFunc func(context.Context, *Tx) error
+
+	// CommitHook defines the "commit middleware". A function that gets a Committer
+	// and returns a Committer. For example:
+	//
+	//	hook := func(next ent.Committer) ent.Committer {
+	//		return ent.CommitFunc(func(context.Context, tx *ent.Tx) error {
+	//			// Do some stuff before.
+	//			if err := next.Commit(ctx, tx); err != nil {
+	//				return err
+	//			}
+	//			// Do some stuff after.
+	//			return nil
+	//		})
+	//	}
+	//
+	CommitHook func(Committer) Committer
+)
+
+// Commit calls f(ctx, m).
+func (f CommitFunc) Commit(ctx context.Context, tx *Tx) error {
+	return f(ctx, tx)
+}
+
+// Commit commits the transaction.
+func (tx *Tx) Commit() error {
+	txDriver := tx.config.driver.(*txDriver)
+	var fn Committer = CommitFunc(func(context.Context, *Tx) error {
+		return txDriver.tx.Commit()
+	})
+	tx.mu.Lock()
+	hooks := append([]CommitHook(nil), tx.onCommit...)
+	tx.mu.Unlock()
+	for i := len(hooks) - 1; i >= 0; i-- {
+		fn = hooks[i](fn)
+	}
+	return fn.Commit(tx.ctx, tx)
+}
+
+// OnCommit adds a hook to call on commit.
+func (tx *Tx) OnCommit(f CommitHook) {
+	tx.mu.Lock()
+	defer tx.mu.Unlock()
+	tx.onCommit = append(tx.onCommit, f)
+}
+
+type (
+	// Rollbacker is the interface that wraps the Rollbacker method.
+	Rollbacker interface {
+		Rollback(context.Context, *Tx) error
+	}
+
+	// The RollbackFunc type is an adapter to allow the use of ordinary
+	// function as a Rollbacker. If f is a function with the appropriate
+	// signature, RollbackFunc(f) is a Rollbacker that calls f.
+	RollbackFunc func(context.Context, *Tx) error
+
+	// RollbackHook defines the "rollback middleware". A function that gets a Rollbacker
+	// and returns a Rollbacker. For example:
+	//
+	//	hook := func(next ent.Rollbacker) ent.Rollbacker {
+	//		return ent.RollbackFunc(func(context.Context, tx *ent.Tx) error {
+	//			// Do some stuff before.
+	//			if err := next.Rollback(ctx, tx); err != nil {
+	//				return err
+	//			}
+	//			// Do some stuff after.
+	//			return nil
+	//		})
+	//	}
+	//
+	RollbackHook func(Rollbacker) Rollbacker
+)
+
+// Rollback calls f(ctx, m).
+func (f RollbackFunc) Rollback(ctx context.Context, tx *Tx) error {
+	return f(ctx, tx)
+}
+
+// Rollback rollbacks the transaction.
+func (tx *Tx) Rollback() error {
+	txDriver := tx.config.driver.(*txDriver)
+	var fn Rollbacker = RollbackFunc(func(context.Context, *Tx) error {
+		return txDriver.tx.Rollback()
+	})
+	tx.mu.Lock()
+	hooks := append([]RollbackHook(nil), tx.onRollback...)
+	tx.mu.Unlock()
+	for i := len(hooks) - 1; i >= 0; i-- {
+		fn = hooks[i](fn)
+	}
+	return fn.Rollback(tx.ctx, tx)
+}
+
+// OnRollback adds a hook to call on rollback.
+func (tx *Tx) OnRollback(f RollbackHook) {
+	tx.mu.Lock()
+	defer tx.mu.Unlock()
+	tx.onRollback = append(tx.onRollback, f)
+}
+
+// Client returns a Client that binds to current transaction.
+func (tx *Tx) Client() *Client {
+	tx.clientOnce.Do(func() {
+		tx.client = &Client{config: tx.config}
+		tx.client.init()
+	})
+	return tx.client
+}
+
+func (tx *Tx) init() {
+	tx.User = NewUserClient(tx.config)
+}
+
+// txDriver wraps the given dialect.Tx with a nop dialect.Driver implementation.
+// The idea is to support transactions without adding any extra code to the builders.
+// When a builder calls to driver.Tx(), it gets the same dialect.Tx instance.
+// Commit and Rollback are nop for the internal builders and the user must call one
+// of them in order to commit or rollback the transaction.
+//
+// If a closed transaction is embedded in one of the generated entities, and the entity
+// applies a query, for example: User.QueryXXX(), the query will be executed
+// through the driver which created this transaction.
+//
+// Note that txDriver is not goroutine safe.
+type txDriver struct {
+	// the driver we started the transaction from.
+	drv dialect.Driver
+	// tx is the underlying transaction.
+	tx dialect.Tx
+}
+
+// newTx creates a new transactional driver.
+func newTx(ctx context.Context, drv dialect.Driver) (*txDriver, error) {
+	tx, err := drv.Tx(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return &txDriver{tx: tx, drv: drv}, nil
+}
+
+// Tx returns the transaction wrapper (txDriver) to avoid Commit or Rollback calls
+// from the internal builders. Should be called only by the internal builders.
+func (tx *txDriver) Tx(context.Context) (dialect.Tx, error) { return tx, nil }
+
+// Dialect returns the dialect of the driver we started the transaction from.
+func (tx *txDriver) Dialect() string { return tx.drv.Dialect() }
+
+// Close is a nop close.
+func (*txDriver) Close() error { return nil }
+
+// Commit is a nop commit for the internal builders.
+// User must call `Tx.Commit` in order to commit the transaction.
+func (*txDriver) Commit() error { return nil }
+
+// Rollback is a nop rollback for the internal builders.
+// User must call `Tx.Rollback` in order to rollback the transaction.
+func (*txDriver) Rollback() error { return nil }
+
+// Exec calls tx.Exec.
+func (tx *txDriver) Exec(ctx context.Context, query string, args, v interface{}) error {
+	return tx.tx.Exec(ctx, query, args, v)
+}
+
+// Query calls tx.Query.
+func (tx *txDriver) Query(ctx context.Context, query string, args, v interface{}) error {
+	return tx.tx.Query(ctx, query, args, v)
+}
+
+var _ dialect.Driver = (*txDriver)(nil)

ent/user.go

@@ -0,0 +1,121 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"fmt"
+	"goweb/ent/user"
+	"strings"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+)
+
+// User is the model entity for the User schema.
+type User struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Username holds the value of the "username" field.
+	Username string `json:"username,omitempty"`
+	// Password holds the value of the "password" field.
+	Password string `json:"-"`
+	// CreatedAt holds the value of the "created_at" field.
+	CreatedAt time.Time `json:"created_at,omitempty"`
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*User) scanValues(columns []string) ([]interface{}, error) {
+	values := make([]interface{}, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case user.FieldID:
+			values[i] = new(sql.NullInt64)
+		case user.FieldUsername, user.FieldPassword:
+			values[i] = new(sql.NullString)
+		case user.FieldCreatedAt:
+			values[i] = new(sql.NullTime)
+		default:
+			return nil, fmt.Errorf("unexpected column %q for type User", columns[i])
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the User fields.
+func (u *User) assignValues(columns []string, values []interface{}) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case user.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			u.ID = int(value.Int64)
+		case user.FieldUsername:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field username", values[i])
+			} else if value.Valid {
+				u.Username = value.String
+			}
+		case user.FieldPassword:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field password", values[i])
+			} else if value.Valid {
+				u.Password = value.String
+			}
+		case user.FieldCreatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field created_at", values[i])
+			} else if value.Valid {
+				u.CreatedAt = value.Time
+			}
+		}
+	}
+	return nil
+}
+
+// Update returns a builder for updating this User.
+// Note that you need to call User.Unwrap() before calling this method if this User
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (u *User) Update() *UserUpdateOne {
+	return (&UserClient{config: u.config}).UpdateOne(u)
+}
+
+// Unwrap unwraps the User entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (u *User) Unwrap() *User {
+	tx, ok := u.config.driver.(*txDriver)
+	if !ok {
+		panic("ent: User is not a transactional entity")
+	}
+	u.config.driver = tx.drv
+	return u
+}
+
+// String implements the fmt.Stringer.
+func (u *User) String() string {
+	var builder strings.Builder
+	builder.WriteString("User(")
+	builder.WriteString(fmt.Sprintf("id=%v", u.ID))
+	builder.WriteString(", username=")
+	builder.WriteString(u.Username)
+	builder.WriteString(", password=<sensitive>")
+	builder.WriteString(", created_at=")
+	builder.WriteString(u.CreatedAt.Format(time.ANSIC))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Users is a parsable slice of User.
+type Users []*User
+
+func (u Users) config(cfg config) {
+	for _i := range u {
+		u[_i].config = cfg
+	}
+}

ent/user/user.go

@@ -0,0 +1,45 @@
+// Code generated by entc, DO NOT EDIT.
+
+package user
+
+import (
+	"time"
+)
+
+const (
+	// Label holds the string label denoting the user type in the database.
+	Label = "user"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldUsername holds the string denoting the username field in the database.
+	FieldUsername = "username"
+	// FieldPassword holds the string denoting the password field in the database.
+	FieldPassword = "password"
+	// FieldCreatedAt holds the string denoting the created_at field in the database.
+	FieldCreatedAt = "created_at"
+	// Table holds the table name of the user in the database.
+	Table = "users"
+)
+
+// Columns holds all SQL columns for user fields.
+var Columns = []string{
+	FieldID,
+	FieldUsername,
+	FieldPassword,
+	FieldCreatedAt,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
+	DefaultCreatedAt func() time.Time
+)

ent/user/where.go

@@ -0,0 +1,444 @@
+// Code generated by entc, DO NOT EDIT.
+
+package user
+
+import (
+	"goweb/ent/predicate"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldID), id))
+	})
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldID), id))
+	})
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.NEQ(s.C(FieldID), id))
+	})
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(ids) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		v := make([]interface{}, len(ids))
+		for i := range v {
+			v[i] = ids[i]
+		}
+		s.Where(sql.In(s.C(FieldID), v...))
+	})
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(ids) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		v := make([]interface{}, len(ids))
+		for i := range v {
+			v[i] = ids[i]
+		}
+		s.Where(sql.NotIn(s.C(FieldID), v...))
+	})
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GT(s.C(FieldID), id))
+	})
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GTE(s.C(FieldID), id))
+	})
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LT(s.C(FieldID), id))
+	})
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LTE(s.C(FieldID), id))
+	})
+}
+
+// Username applies equality check predicate on the "username" field. It's identical to UsernameEQ.
+func Username(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldUsername), v))
+	})
+}
+
+// Password applies equality check predicate on the "password" field. It's identical to PasswordEQ.
+func Password(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldPassword), v))
+	})
+}
+
+// CreatedAt applies equality check predicate on the "created_at" field. It's identical to CreatedAtEQ.
+func CreatedAt(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldCreatedAt), v))
+	})
+}
+
+// UsernameEQ applies the EQ predicate on the "username" field.
+func UsernameEQ(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameNEQ applies the NEQ predicate on the "username" field.
+func UsernameNEQ(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.NEQ(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameIn applies the In predicate on the "username" field.
+func UsernameIn(vs ...string) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.In(s.C(FieldUsername), v...))
+	})
+}
+
+// UsernameNotIn applies the NotIn predicate on the "username" field.
+func UsernameNotIn(vs ...string) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.NotIn(s.C(FieldUsername), v...))
+	})
+}
+
+// UsernameGT applies the GT predicate on the "username" field.
+func UsernameGT(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GT(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameGTE applies the GTE predicate on the "username" field.
+func UsernameGTE(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GTE(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameLT applies the LT predicate on the "username" field.
+func UsernameLT(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LT(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameLTE applies the LTE predicate on the "username" field.
+func UsernameLTE(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LTE(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameContains applies the Contains predicate on the "username" field.
+func UsernameContains(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.Contains(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameHasPrefix applies the HasPrefix predicate on the "username" field.
+func UsernameHasPrefix(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.HasPrefix(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameHasSuffix applies the HasSuffix predicate on the "username" field.
+func UsernameHasSuffix(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.HasSuffix(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameEqualFold applies the EqualFold predicate on the "username" field.
+func UsernameEqualFold(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EqualFold(s.C(FieldUsername), v))
+	})
+}
+
+// UsernameContainsFold applies the ContainsFold predicate on the "username" field.
+func UsernameContainsFold(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.ContainsFold(s.C(FieldUsername), v))
+	})
+}
+
+// PasswordEQ applies the EQ predicate on the "password" field.
+func PasswordEQ(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordNEQ applies the NEQ predicate on the "password" field.
+func PasswordNEQ(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.NEQ(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordIn applies the In predicate on the "password" field.
+func PasswordIn(vs ...string) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.In(s.C(FieldPassword), v...))
+	})
+}
+
+// PasswordNotIn applies the NotIn predicate on the "password" field.
+func PasswordNotIn(vs ...string) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.NotIn(s.C(FieldPassword), v...))
+	})
+}
+
+// PasswordGT applies the GT predicate on the "password" field.
+func PasswordGT(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GT(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordGTE applies the GTE predicate on the "password" field.
+func PasswordGTE(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GTE(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordLT applies the LT predicate on the "password" field.
+func PasswordLT(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LT(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordLTE applies the LTE predicate on the "password" field.
+func PasswordLTE(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LTE(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordContains applies the Contains predicate on the "password" field.
+func PasswordContains(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.Contains(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordHasPrefix applies the HasPrefix predicate on the "password" field.
+func PasswordHasPrefix(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.HasPrefix(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordHasSuffix applies the HasSuffix predicate on the "password" field.
+func PasswordHasSuffix(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.HasSuffix(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordEqualFold applies the EqualFold predicate on the "password" field.
+func PasswordEqualFold(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EqualFold(s.C(FieldPassword), v))
+	})
+}
+
+// PasswordContainsFold applies the ContainsFold predicate on the "password" field.
+func PasswordContainsFold(v string) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.ContainsFold(s.C(FieldPassword), v))
+	})
+}
+
+// CreatedAtEQ applies the EQ predicate on the "created_at" field.
+func CreatedAtEQ(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.EQ(s.C(FieldCreatedAt), v))
+	})
+}
+
+// CreatedAtNEQ applies the NEQ predicate on the "created_at" field.
+func CreatedAtNEQ(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.NEQ(s.C(FieldCreatedAt), v))
+	})
+}
+
+// CreatedAtIn applies the In predicate on the "created_at" field.
+func CreatedAtIn(vs ...time.Time) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.In(s.C(FieldCreatedAt), v...))
+	})
+}
+
+// CreatedAtNotIn applies the NotIn predicate on the "created_at" field.
+func CreatedAtNotIn(vs ...time.Time) predicate.User {
+	v := make([]interface{}, len(vs))
+	for i := range v {
+		v[i] = vs[i]
+	}
+	return predicate.User(func(s *sql.Selector) {
+		// if not arguments were provided, append the FALSE constants,
+		// since we can't apply "IN ()". This will make this predicate falsy.
+		if len(v) == 0 {
+			s.Where(sql.False())
+			return
+		}
+		s.Where(sql.NotIn(s.C(FieldCreatedAt), v...))
+	})
+}
+
+// CreatedAtGT applies the GT predicate on the "created_at" field.
+func CreatedAtGT(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GT(s.C(FieldCreatedAt), v))
+	})
+}
+
+// CreatedAtGTE applies the GTE predicate on the "created_at" field.
+func CreatedAtGTE(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.GTE(s.C(FieldCreatedAt), v))
+	})
+}
+
+// CreatedAtLT applies the LT predicate on the "created_at" field.
+func CreatedAtLT(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LT(s.C(FieldCreatedAt), v))
+	})
+}
+
+// CreatedAtLTE applies the LTE predicate on the "created_at" field.
+func CreatedAtLTE(v time.Time) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s.Where(sql.LTE(s.C(FieldCreatedAt), v))
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.User) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s1 := s.Clone().SetP(nil)
+		for _, p := range predicates {
+			p(s1)
+		}
+		s.Where(s1.P())
+	})
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.User) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		s1 := s.Clone().SetP(nil)
+		for i, p := range predicates {
+			if i > 0 {
+				s1.Or()
+			}
+			p(s1)
+		}
+		s.Where(s1.P())
+	})
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.User) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		p(s.Not())
+	})
+}

ent/user_create.go

@@ -0,0 +1,273 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"goweb/ent/user"
+	"time"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+)
+
+// UserCreate is the builder for creating a User entity.
+type UserCreate struct {
+	config
+	mutation *UserMutation
+	hooks    []Hook
+}
+
+// SetUsername sets the "username" field.
+func (uc *UserCreate) SetUsername(s string) *UserCreate {
+	uc.mutation.SetUsername(s)
+	return uc
+}
+
+// SetPassword sets the "password" field.
+func (uc *UserCreate) SetPassword(s string) *UserCreate {
+	uc.mutation.SetPassword(s)
+	return uc
+}
+
+// SetCreatedAt sets the "created_at" field.
+func (uc *UserCreate) SetCreatedAt(t time.Time) *UserCreate {
+	uc.mutation.SetCreatedAt(t)
+	return uc
+}
+
+// SetNillableCreatedAt sets the "created_at" field if the given value is not nil.
+func (uc *UserCreate) SetNillableCreatedAt(t *time.Time) *UserCreate {
+	if t != nil {
+		uc.SetCreatedAt(*t)
+	}
+	return uc
+}
+
+// Mutation returns the UserMutation object of the builder.
+func (uc *UserCreate) Mutation() *UserMutation {
+	return uc.mutation
+}
+
+// Save creates the User in the database.
+func (uc *UserCreate) Save(ctx context.Context) (*User, error) {
+	var (
+		err  error
+		node *User
+	)
+	uc.defaults()
+	if len(uc.hooks) == 0 {
+		if err = uc.check(); err != nil {
+			return nil, err
+		}
+		node, err = uc.sqlSave(ctx)
+	} else {
+		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+			mutation, ok := m.(*UserMutation)
+			if !ok {
+				return nil, fmt.Errorf("unexpected mutation type %T", m)
+			}
+			if err = uc.check(); err != nil {
+				return nil, err
+			}
+			uc.mutation = mutation
+			if node, err = uc.sqlSave(ctx); err != nil {
+				return nil, err
+			}
+			mutation.id = &node.ID
+			mutation.done = true
+			return node, err
+		})
+		for i := len(uc.hooks) - 1; i >= 0; i-- {
+			if uc.hooks[i] == nil {
+				return nil, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
+			}
+			mut = uc.hooks[i](mut)
+		}
+		if _, err := mut.Mutate(ctx, uc.mutation); err != nil {
+			return nil, err
+		}
+	}
+	return node, err
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (uc *UserCreate) SaveX(ctx context.Context) *User {
+	v, err := uc.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (uc *UserCreate) Exec(ctx context.Context) error {
+	_, err := uc.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (uc *UserCreate) ExecX(ctx context.Context) {
+	if err := uc.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// defaults sets the default values of the builder before save.
+func (uc *UserCreate) defaults() {
+	if _, ok := uc.mutation.CreatedAt(); !ok {
+		v := user.DefaultCreatedAt()
+		uc.mutation.SetCreatedAt(v)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (uc *UserCreate) check() error {
+	if _, ok := uc.mutation.Username(); !ok {
+		return &ValidationError{Name: "username", err: errors.New(`ent: missing required field "username"`)}
+	}
+	if _, ok := uc.mutation.Password(); !ok {
+		return &ValidationError{Name: "password", err: errors.New(`ent: missing required field "password"`)}
+	}
+	if _, ok := uc.mutation.CreatedAt(); !ok {
+		return &ValidationError{Name: "created_at", err: errors.New(`ent: missing required field "created_at"`)}
+	}
+	return nil
+}
+
+func (uc *UserCreate) sqlSave(ctx context.Context) (*User, error) {
+	_node, _spec := uc.createSpec()
+	if err := sqlgraph.CreateNode(ctx, uc.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{err.Error(), err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	return _node, nil
+}
+
+func (uc *UserCreate) createSpec() (*User, *sqlgraph.CreateSpec) {
+	var (
+		_node = &User{config: uc.config}
+		_spec = &sqlgraph.CreateSpec{
+			Table: user.Table,
+			ID: &sqlgraph.FieldSpec{
+				Type:   field.TypeInt,
+				Column: user.FieldID,
+			},
+		}
+	)
+	if value, ok := uc.mutation.Username(); ok {
+		_spec.Fields = append(_spec.Fields, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldUsername,
+		})
+		_node.Username = value
+	}
+	if value, ok := uc.mutation.Password(); ok {
+		_spec.Fields = append(_spec.Fields, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldPassword,
+		})
+		_node.Password = value
+	}
+	if value, ok := uc.mutation.CreatedAt(); ok {
+		_spec.Fields = append(_spec.Fields, &sqlgraph.FieldSpec{
+			Type:   field.TypeTime,
+			Value:  value,
+			Column: user.FieldCreatedAt,
+		})
+		_node.CreatedAt = value
+	}
+	return _node, _spec
+}
+
+// UserCreateBulk is the builder for creating many User entities in bulk.
+type UserCreateBulk struct {
+	config
+	builders []*UserCreate
+}
+
+// Save creates the User entities in the database.
+func (ucb *UserCreateBulk) Save(ctx context.Context) ([]*User, error) {
+	specs := make([]*sqlgraph.CreateSpec, len(ucb.builders))
+	nodes := make([]*User, len(ucb.builders))
+	mutators := make([]Mutator, len(ucb.builders))
+	for i := range ucb.builders {
+		func(i int, root context.Context) {
+			builder := ucb.builders[i]
+			builder.defaults()
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*UserMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				nodes[i], specs[i] = builder.createSpec()
+				var err error
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, ucb.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, ucb.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{err.Error(), err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				mutation.done = true
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, ucb.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (ucb *UserCreateBulk) SaveX(ctx context.Context) []*User {
+	v, err := ucb.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (ucb *UserCreateBulk) Exec(ctx context.Context) error {
+	_, err := ucb.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (ucb *UserCreateBulk) ExecX(ctx context.Context) {
+	if err := ucb.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

ent/user_delete.go

@@ -0,0 +1,111 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"goweb/ent/predicate"
+	"goweb/ent/user"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+)
+
+// UserDelete is the builder for deleting a User entity.
+type UserDelete struct {
+	config
+	hooks    []Hook
+	mutation *UserMutation
+}
+
+// Where appends a list predicates to the UserDelete builder.
+func (ud *UserDelete) Where(ps ...predicate.User) *UserDelete {
+	ud.mutation.Where(ps...)
+	return ud
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (ud *UserDelete) Exec(ctx context.Context) (int, error) {
+	var (
+		err      error
+		affected int
+	)
+	if len(ud.hooks) == 0 {
+		affected, err = ud.sqlExec(ctx)
+	} else {
+		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+			mutation, ok := m.(*UserMutation)
+			if !ok {
+				return nil, fmt.Errorf("unexpected mutation type %T", m)
+			}
+			ud.mutation = mutation
+			affected, err = ud.sqlExec(ctx)
+			mutation.done = true
+			return affected, err
+		})
+		for i := len(ud.hooks) - 1; i >= 0; i-- {
+			if ud.hooks[i] == nil {
+				return 0, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
+			}
+			mut = ud.hooks[i](mut)
+		}
+		if _, err := mut.Mutate(ctx, ud.mutation); err != nil {
+			return 0, err
+		}
+	}
+	return affected, err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (ud *UserDelete) ExecX(ctx context.Context) int {
+	n, err := ud.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (ud *UserDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := &sqlgraph.DeleteSpec{
+		Node: &sqlgraph.NodeSpec{
+			Table: user.Table,
+			ID: &sqlgraph.FieldSpec{
+				Type:   field.TypeInt,
+				Column: user.FieldID,
+			},
+		},
+	}
+	if ps := ud.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return sqlgraph.DeleteNodes(ctx, ud.driver, _spec)
+}
+
+// UserDeleteOne is the builder for deleting a single User entity.
+type UserDeleteOne struct {
+	ud *UserDelete
+}
+
+// Exec executes the deletion query.
+func (udo *UserDeleteOne) Exec(ctx context.Context) error {
+	n, err := udo.ud.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{user.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (udo *UserDeleteOne) ExecX(ctx context.Context) {
+	udo.ud.ExecX(ctx)
+}

ent/user_query.go

@@ -0,0 +1,915 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"goweb/ent/predicate"
+	"goweb/ent/user"
+	"math"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+)
+
+// UserQuery is the builder for querying User entities.
+type UserQuery struct {
+	config
+	limit      *int
+	offset     *int
+	unique     *bool
+	order      []OrderFunc
+	fields     []string
+	predicates []predicate.User
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the UserQuery builder.
+func (uq *UserQuery) Where(ps ...predicate.User) *UserQuery {
+	uq.predicates = append(uq.predicates, ps...)
+	return uq
+}
+
+// Limit adds a limit step to the query.
+func (uq *UserQuery) Limit(limit int) *UserQuery {
+	uq.limit = &limit
+	return uq
+}
+
+// Offset adds an offset step to the query.
+func (uq *UserQuery) Offset(offset int) *UserQuery {
+	uq.offset = &offset
+	return uq
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (uq *UserQuery) Unique(unique bool) *UserQuery {
+	uq.unique = &unique
+	return uq
+}
+
+// Order adds an order step to the query.
+func (uq *UserQuery) Order(o ...OrderFunc) *UserQuery {
+	uq.order = append(uq.order, o...)
+	return uq
+}
+
+// First returns the first User entity from the query.
+// Returns a *NotFoundError when no User was found.
+func (uq *UserQuery) First(ctx context.Context) (*User, error) {
+	nodes, err := uq.Limit(1).All(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{user.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (uq *UserQuery) FirstX(ctx context.Context) *User {
+	node, err := uq.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first User ID from the query.
+// Returns a *NotFoundError when no User ID was found.
+func (uq *UserQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = uq.Limit(1).IDs(ctx); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{user.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (uq *UserQuery) FirstIDX(ctx context.Context) int {
+	id, err := uq.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single User entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when exactly one User entity is not found.
+// Returns a *NotFoundError when no User entities are found.
+func (uq *UserQuery) Only(ctx context.Context) (*User, error) {
+	nodes, err := uq.Limit(2).All(ctx)
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{user.Label}
+	default:
+		return nil, &NotSingularError{user.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (uq *UserQuery) OnlyX(ctx context.Context) *User {
+	node, err := uq.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only User ID in the query.
+// Returns a *NotSingularError when exactly one User ID is not found.
+// Returns a *NotFoundError when no entities are found.
+func (uq *UserQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = uq.Limit(2).IDs(ctx); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = &NotSingularError{user.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (uq *UserQuery) OnlyIDX(ctx context.Context) int {
+	id, err := uq.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Users.
+func (uq *UserQuery) All(ctx context.Context) ([]*User, error) {
+	if err := uq.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	return uq.sqlAll(ctx)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (uq *UserQuery) AllX(ctx context.Context) []*User {
+	nodes, err := uq.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of User IDs.
+func (uq *UserQuery) IDs(ctx context.Context) ([]int, error) {
+	var ids []int
+	if err := uq.Select(user.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (uq *UserQuery) IDsX(ctx context.Context) []int {
+	ids, err := uq.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (uq *UserQuery) Count(ctx context.Context) (int, error) {
+	if err := uq.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return uq.sqlCount(ctx)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (uq *UserQuery) CountX(ctx context.Context) int {
+	count, err := uq.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (uq *UserQuery) Exist(ctx context.Context) (bool, error) {
+	if err := uq.prepareQuery(ctx); err != nil {
+		return false, err
+	}
+	return uq.sqlExist(ctx)
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (uq *UserQuery) ExistX(ctx context.Context) bool {
+	exist, err := uq.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the UserQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (uq *UserQuery) Clone() *UserQuery {
+	if uq == nil {
+		return nil
+	}
+	return &UserQuery{
+		config:     uq.config,
+		limit:      uq.limit,
+		offset:     uq.offset,
+		order:      append([]OrderFunc{}, uq.order...),
+		predicates: append([]predicate.User{}, uq.predicates...),
+		// clone intermediate query.
+		sql:  uq.sql.Clone(),
+		path: uq.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Username string `json:"username,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.User.Query().
+//		GroupBy(user.FieldUsername).
+//		Aggregate(ent.Count()).
+//		Scan(ctx, &v)
+//
+func (uq *UserQuery) GroupBy(field string, fields ...string) *UserGroupBy {
+	group := &UserGroupBy{config: uq.config}
+	group.fields = append([]string{field}, fields...)
+	group.path = func(ctx context.Context) (prev *sql.Selector, err error) {
+		if err := uq.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		return uq.sqlQuery(ctx), nil
+	}
+	return group
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Username string `json:"username,omitempty"`
+//	}
+//
+//	client.User.Query().
+//		Select(user.FieldUsername).
+//		Scan(ctx, &v)
+//
+func (uq *UserQuery) Select(fields ...string) *UserSelect {
+	uq.fields = append(uq.fields, fields...)
+	return &UserSelect{UserQuery: uq}
+}
+
+func (uq *UserQuery) prepareQuery(ctx context.Context) error {
+	for _, f := range uq.fields {
+		if !user.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+		}
+	}
+	if uq.path != nil {
+		prev, err := uq.path(ctx)
+		if err != nil {
+			return err
+		}
+		uq.sql = prev
+	}
+	return nil
+}
+
+func (uq *UserQuery) sqlAll(ctx context.Context) ([]*User, error) {
+	var (
+		nodes = []*User{}
+		_spec = uq.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]interface{}, error) {
+		node := &User{config: uq.config}
+		nodes = append(nodes, node)
+		return node.scanValues(columns)
+	}
+	_spec.Assign = func(columns []string, values []interface{}) error {
+		if len(nodes) == 0 {
+			return fmt.Errorf("ent: Assign called without calling ScanValues")
+		}
+		node := nodes[len(nodes)-1]
+		return node.assignValues(columns, values)
+	}
+	if err := sqlgraph.QueryNodes(ctx, uq.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (uq *UserQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := uq.querySpec()
+	return sqlgraph.CountNodes(ctx, uq.driver, _spec)
+}
+
+func (uq *UserQuery) sqlExist(ctx context.Context) (bool, error) {
+	n, err := uq.sqlCount(ctx)
+	if err != nil {
+		return false, fmt.Errorf("ent: check existence: %w", err)
+	}
+	return n > 0, nil
+}
+
+func (uq *UserQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := &sqlgraph.QuerySpec{
+		Node: &sqlgraph.NodeSpec{
+			Table:   user.Table,
+			Columns: user.Columns,
+			ID: &sqlgraph.FieldSpec{
+				Type:   field.TypeInt,
+				Column: user.FieldID,
+			},
+		},
+		From:   uq.sql,
+		Unique: true,
+	}
+	if unique := uq.unique; unique != nil {
+		_spec.Unique = *unique
+	}
+	if fields := uq.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, user.FieldID)
+		for i := range fields {
+			if fields[i] != user.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := uq.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := uq.limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := uq.offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := uq.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (uq *UserQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(uq.driver.Dialect())
+	t1 := builder.Table(user.Table)
+	columns := uq.fields
+	if len(columns) == 0 {
+		columns = user.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if uq.sql != nil {
+		selector = uq.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	for _, p := range uq.predicates {
+		p(selector)
+	}
+	for _, p := range uq.order {
+		p(selector)
+	}
+	if offset := uq.offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := uq.limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// UserGroupBy is the group-by builder for User entities.
+type UserGroupBy struct {
+	config
+	fields []string
+	fns    []AggregateFunc
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (ugb *UserGroupBy) Aggregate(fns ...AggregateFunc) *UserGroupBy {
+	ugb.fns = append(ugb.fns, fns...)
+	return ugb
+}
+
+// Scan applies the group-by query and scans the result into the given value.
+func (ugb *UserGroupBy) Scan(ctx context.Context, v interface{}) error {
+	query, err := ugb.path(ctx)
+	if err != nil {
+		return err
+	}
+	ugb.sql = query
+	return ugb.sqlScan(ctx, v)
+}
+
+// ScanX is like Scan, but panics if an error occurs.
+func (ugb *UserGroupBy) ScanX(ctx context.Context, v interface{}) {
+	if err := ugb.Scan(ctx, v); err != nil {
+		panic(err)
+	}
+}
+
+// Strings returns list of strings from group-by.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Strings(ctx context.Context) ([]string, error) {
+	if len(ugb.fields) > 1 {
+		return nil, errors.New("ent: UserGroupBy.Strings is not achievable when grouping more than 1 field")
+	}
+	var v []string
+	if err := ugb.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// StringsX is like Strings, but panics if an error occurs.
+func (ugb *UserGroupBy) StringsX(ctx context.Context) []string {
+	v, err := ugb.Strings(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// String returns a single string from a group-by query.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) String(ctx context.Context) (_ string, err error) {
+	var v []string
+	if v, err = ugb.Strings(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserGroupBy.Strings returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// StringX is like String, but panics if an error occurs.
+func (ugb *UserGroupBy) StringX(ctx context.Context) string {
+	v, err := ugb.String(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Ints returns list of ints from group-by.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Ints(ctx context.Context) ([]int, error) {
+	if len(ugb.fields) > 1 {
+		return nil, errors.New("ent: UserGroupBy.Ints is not achievable when grouping more than 1 field")
+	}
+	var v []int
+	if err := ugb.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// IntsX is like Ints, but panics if an error occurs.
+func (ugb *UserGroupBy) IntsX(ctx context.Context) []int {
+	v, err := ugb.Ints(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Int returns a single int from a group-by query.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Int(ctx context.Context) (_ int, err error) {
+	var v []int
+	if v, err = ugb.Ints(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserGroupBy.Ints returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// IntX is like Int, but panics if an error occurs.
+func (ugb *UserGroupBy) IntX(ctx context.Context) int {
+	v, err := ugb.Int(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64s returns list of float64s from group-by.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Float64s(ctx context.Context) ([]float64, error) {
+	if len(ugb.fields) > 1 {
+		return nil, errors.New("ent: UserGroupBy.Float64s is not achievable when grouping more than 1 field")
+	}
+	var v []float64
+	if err := ugb.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// Float64sX is like Float64s, but panics if an error occurs.
+func (ugb *UserGroupBy) Float64sX(ctx context.Context) []float64 {
+	v, err := ugb.Float64s(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64 returns a single float64 from a group-by query.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Float64(ctx context.Context) (_ float64, err error) {
+	var v []float64
+	if v, err = ugb.Float64s(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserGroupBy.Float64s returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// Float64X is like Float64, but panics if an error occurs.
+func (ugb *UserGroupBy) Float64X(ctx context.Context) float64 {
+	v, err := ugb.Float64(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bools returns list of bools from group-by.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Bools(ctx context.Context) ([]bool, error) {
+	if len(ugb.fields) > 1 {
+		return nil, errors.New("ent: UserGroupBy.Bools is not achievable when grouping more than 1 field")
+	}
+	var v []bool
+	if err := ugb.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// BoolsX is like Bools, but panics if an error occurs.
+func (ugb *UserGroupBy) BoolsX(ctx context.Context) []bool {
+	v, err := ugb.Bools(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bool returns a single bool from a group-by query.
+// It is only allowed when executing a group-by query with one field.
+func (ugb *UserGroupBy) Bool(ctx context.Context) (_ bool, err error) {
+	var v []bool
+	if v, err = ugb.Bools(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserGroupBy.Bools returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// BoolX is like Bool, but panics if an error occurs.
+func (ugb *UserGroupBy) BoolX(ctx context.Context) bool {
+	v, err := ugb.Bool(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+func (ugb *UserGroupBy) sqlScan(ctx context.Context, v interface{}) error {
+	for _, f := range ugb.fields {
+		if !user.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("invalid field %q for group-by", f)}
+		}
+	}
+	selector := ugb.sqlQuery()
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := ugb.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+func (ugb *UserGroupBy) sqlQuery() *sql.Selector {
+	selector := ugb.sql.Select()
+	aggregation := make([]string, 0, len(ugb.fns))
+	for _, fn := range ugb.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	// If no columns were selected in a custom aggregation function, the default
+	// selection is the fields used for "group-by", and the aggregation functions.
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(ugb.fields)+len(ugb.fns))
+		for _, f := range ugb.fields {
+			columns = append(columns, selector.C(f))
+		}
+		for _, c := range aggregation {
+			columns = append(columns, c)
+		}
+		selector.Select(columns...)
+	}
+	return selector.GroupBy(selector.Columns(ugb.fields...)...)
+}
+
+// UserSelect is the builder for selecting fields of User entities.
+type UserSelect struct {
+	*UserQuery
+	// intermediate query (i.e. traversal path).
+	sql *sql.Selector
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (us *UserSelect) Scan(ctx context.Context, v interface{}) error {
+	if err := us.prepareQuery(ctx); err != nil {
+		return err
+	}
+	us.sql = us.UserQuery.sqlQuery(ctx)
+	return us.sqlScan(ctx, v)
+}
+
+// ScanX is like Scan, but panics if an error occurs.
+func (us *UserSelect) ScanX(ctx context.Context, v interface{}) {
+	if err := us.Scan(ctx, v); err != nil {
+		panic(err)
+	}
+}
+
+// Strings returns list of strings from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Strings(ctx context.Context) ([]string, error) {
+	if len(us.fields) > 1 {
+		return nil, errors.New("ent: UserSelect.Strings is not achievable when selecting more than 1 field")
+	}
+	var v []string
+	if err := us.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// StringsX is like Strings, but panics if an error occurs.
+func (us *UserSelect) StringsX(ctx context.Context) []string {
+	v, err := us.Strings(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// String returns a single string from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) String(ctx context.Context) (_ string, err error) {
+	var v []string
+	if v, err = us.Strings(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserSelect.Strings returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// StringX is like String, but panics if an error occurs.
+func (us *UserSelect) StringX(ctx context.Context) string {
+	v, err := us.String(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Ints returns list of ints from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Ints(ctx context.Context) ([]int, error) {
+	if len(us.fields) > 1 {
+		return nil, errors.New("ent: UserSelect.Ints is not achievable when selecting more than 1 field")
+	}
+	var v []int
+	if err := us.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// IntsX is like Ints, but panics if an error occurs.
+func (us *UserSelect) IntsX(ctx context.Context) []int {
+	v, err := us.Ints(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Int returns a single int from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Int(ctx context.Context) (_ int, err error) {
+	var v []int
+	if v, err = us.Ints(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserSelect.Ints returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// IntX is like Int, but panics if an error occurs.
+func (us *UserSelect) IntX(ctx context.Context) int {
+	v, err := us.Int(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64s returns list of float64s from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Float64s(ctx context.Context) ([]float64, error) {
+	if len(us.fields) > 1 {
+		return nil, errors.New("ent: UserSelect.Float64s is not achievable when selecting more than 1 field")
+	}
+	var v []float64
+	if err := us.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// Float64sX is like Float64s, but panics if an error occurs.
+func (us *UserSelect) Float64sX(ctx context.Context) []float64 {
+	v, err := us.Float64s(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64 returns a single float64 from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Float64(ctx context.Context) (_ float64, err error) {
+	var v []float64
+	if v, err = us.Float64s(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserSelect.Float64s returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// Float64X is like Float64, but panics if an error occurs.
+func (us *UserSelect) Float64X(ctx context.Context) float64 {
+	v, err := us.Float64(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bools returns list of bools from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Bools(ctx context.Context) ([]bool, error) {
+	if len(us.fields) > 1 {
+		return nil, errors.New("ent: UserSelect.Bools is not achievable when selecting more than 1 field")
+	}
+	var v []bool
+	if err := us.Scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// BoolsX is like Bools, but panics if an error occurs.
+func (us *UserSelect) BoolsX(ctx context.Context) []bool {
+	v, err := us.Bools(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bool returns a single bool from a selector. It is only allowed when selecting one field.
+func (us *UserSelect) Bool(ctx context.Context) (_ bool, err error) {
+	var v []bool
+	if v, err = us.Bools(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = fmt.Errorf("ent: UserSelect.Bools returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// BoolX is like Bool, but panics if an error occurs.
+func (us *UserSelect) BoolX(ctx context.Context) bool {
+	v, err := us.Bool(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+func (us *UserSelect) sqlScan(ctx context.Context, v interface{}) error {
+	rows := &sql.Rows{}
+	query, args := us.sql.Query()
+	if err := us.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

ent/user_update.go

@@ -0,0 +1,290 @@
+// Code generated by entc, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"goweb/ent/predicate"
+	"goweb/ent/user"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+)
+
+// UserUpdate is the builder for updating User entities.
+type UserUpdate struct {
+	config
+	hooks    []Hook
+	mutation *UserMutation
+}
+
+// Where appends a list predicates to the UserUpdate builder.
+func (uu *UserUpdate) Where(ps ...predicate.User) *UserUpdate {
+	uu.mutation.Where(ps...)
+	return uu
+}
+
+// SetUsername sets the "username" field.
+func (uu *UserUpdate) SetUsername(s string) *UserUpdate {
+	uu.mutation.SetUsername(s)
+	return uu
+}
+
+// SetPassword sets the "password" field.
+func (uu *UserUpdate) SetPassword(s string) *UserUpdate {
+	uu.mutation.SetPassword(s)
+	return uu
+}
+
+// Mutation returns the UserMutation object of the builder.
+func (uu *UserUpdate) Mutation() *UserMutation {
+	return uu.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (uu *UserUpdate) Save(ctx context.Context) (int, error) {
+	var (
+		err      error
+		affected int
+	)
+	if len(uu.hooks) == 0 {
+		affected, err = uu.sqlSave(ctx)
+	} else {
+		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+			mutation, ok := m.(*UserMutation)
+			if !ok {
+				return nil, fmt.Errorf("unexpected mutation type %T", m)
+			}
+			uu.mutation = mutation
+			affected, err = uu.sqlSave(ctx)
+			mutation.done = true
+			return affected, err
+		})
+		for i := len(uu.hooks) - 1; i >= 0; i-- {
+			if uu.hooks[i] == nil {
+				return 0, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
+			}
+			mut = uu.hooks[i](mut)
+		}
+		if _, err := mut.Mutate(ctx, uu.mutation); err != nil {
+			return 0, err
+		}
+	}
+	return affected, err
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (uu *UserUpdate) SaveX(ctx context.Context) int {
+	affected, err := uu.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (uu *UserUpdate) Exec(ctx context.Context) error {
+	_, err := uu.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (uu *UserUpdate) ExecX(ctx context.Context) {
+	if err := uu.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (uu *UserUpdate) sqlSave(ctx context.Context) (n int, err error) {
+	_spec := &sqlgraph.UpdateSpec{
+		Node: &sqlgraph.NodeSpec{
+			Table:   user.Table,
+			Columns: user.Columns,
+			ID: &sqlgraph.FieldSpec{
+				Type:   field.TypeInt,
+				Column: user.FieldID,
+			},
+		},
+	}
+	if ps := uu.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := uu.mutation.Username(); ok {
+		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldUsername,
+		})
+	}
+	if value, ok := uu.mutation.Password(); ok {
+		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldPassword,
+		})
+	}
+	if n, err = sqlgraph.UpdateNodes(ctx, uu.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{user.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{err.Error(), err}
+		}
+		return 0, err
+	}
+	return n, nil
+}
+
+// UserUpdateOne is the builder for updating a single User entity.
+type UserUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *UserMutation
+}
+
+// SetUsername sets the "username" field.
+func (uuo *UserUpdateOne) SetUsername(s string) *UserUpdateOne {
+	uuo.mutation.SetUsername(s)
+	return uuo
+}
+
+// SetPassword sets the "password" field.
+func (uuo *UserUpdateOne) SetPassword(s string) *UserUpdateOne {
+	uuo.mutation.SetPassword(s)
+	return uuo
+}
+
+// Mutation returns the UserMutation object of the builder.
+func (uuo *UserUpdateOne) Mutation() *UserMutation {
+	return uuo.mutation
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (uuo *UserUpdateOne) Select(field string, fields ...string) *UserUpdateOne {
+	uuo.fields = append([]string{field}, fields...)
+	return uuo
+}
+
+// Save executes the query and returns the updated User entity.
+func (uuo *UserUpdateOne) Save(ctx context.Context) (*User, error) {
+	var (
+		err  error
+		node *User
+	)
+	if len(uuo.hooks) == 0 {
+		node, err = uuo.sqlSave(ctx)
+	} else {
+		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+			mutation, ok := m.(*UserMutation)
+			if !ok {
+				return nil, fmt.Errorf("unexpected mutation type %T", m)
+			}
+			uuo.mutation = mutation
+			node, err = uuo.sqlSave(ctx)
+			mutation.done = true
+			return node, err
+		})
+		for i := len(uuo.hooks) - 1; i >= 0; i-- {
+			if uuo.hooks[i] == nil {
+				return nil, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
+			}
+			mut = uuo.hooks[i](mut)
+		}
+		if _, err := mut.Mutate(ctx, uuo.mutation); err != nil {
+			return nil, err
+		}
+	}
+	return node, err
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (uuo *UserUpdateOne) SaveX(ctx context.Context) *User {
+	node, err := uuo.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (uuo *UserUpdateOne) Exec(ctx context.Context) error {
+	_, err := uuo.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (uuo *UserUpdateOne) ExecX(ctx context.Context) {
+	if err := uuo.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (uuo *UserUpdateOne) sqlSave(ctx context.Context) (_node *User, err error) {
+	_spec := &sqlgraph.UpdateSpec{
+		Node: &sqlgraph.NodeSpec{
+			Table:   user.Table,
+			Columns: user.Columns,
+			ID: &sqlgraph.FieldSpec{
+				Type:   field.TypeInt,
+				Column: user.FieldID,
+			},
+		},
+	}
+	id, ok := uuo.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "ID", err: fmt.Errorf("missing User.ID for update")}
+	}
+	_spec.Node.ID.Value = id
+	if fields := uuo.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, user.FieldID)
+		for _, f := range fields {
+			if !user.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+			}
+			if f != user.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := uuo.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := uuo.mutation.Username(); ok {
+		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldUsername,
+		})
+	}
+	if value, ok := uuo.mutation.Password(); ok {
+		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
+			Type:   field.TypeString,
+			Value:  value,
+			Column: user.FieldPassword,
+		})
+	}
+	_node = &User{config: uuo.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, uuo.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{user.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{err.Error(), err}
+		}
+		return nil, err
+	}
+	return _node, nil
+}

go.mod

@@ -16,6 +16,7 @@ require (
 )
 
 require (
+	entgo.io/ent v0.9.1 // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/XiaoMi/pegasus-go-client v0.0.0-20210427083443-f3b6b08bc4c2 // indirect
@@ -26,19 +27,32 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/go-bindata/go-bindata v1.0.1-0.20190711162640-ee3c2418e368 // indirect
+	github.com/go-openapi/inflect v0.19.0 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/uuid v1.1.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/context v1.1.1 // indirect
 	github.com/gorilla/securecookie v1.1.1 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.10.1 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.2.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.9.1 // indirect
+	github.com/jackc/pgx/v4 v4.14.1 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/pegasus-kv/thrift v0.13.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.10.0 // indirect
@@ -47,15 +61,20 @@ require (
 	github.com/prometheus/procfs v0.6.0 // indirect
 	github.com/sirupsen/logrus v1.6.0 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/cobra v1.1.3 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.1 // indirect
 	github.com/vmihailenco/msgpack v4.0.4+incompatible // indirect
 	golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871 // indirect
+	golang.org/x/mod v0.4.2 // indirect
 	golang.org/x/net v0.0.0-20211123203042-d83791d6bcd9 // indirect
 	golang.org/x/sys v0.0.0-20211124211545-fe61309f8881 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324 // indirect
-	google.golang.org/appengine v1.4.0 // indirect
+	golang.org/x/tools v0.1.5 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	google.golang.org/appengine v1.6.1 // indirect
 	google.golang.org/protobuf v1.26.0 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
 	gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637 // indirect

go.sum

@@ -1,15 +1,29 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+entgo.io/ent v0.9.1 h1:IG8andyeD79GG24U8Q+1Y45hQXj6gY5evSBcva5gtBk=
+entgo.io/ent v0.9.1/go.mod h1:6NUeTfUN5mp5YN+5tgoH1SlakSvYPTBOYotSOvaI4ak=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/HdrHistogram/hdrhistogram-go v1.1.0/go.mod h1:yDgFjdqOqDEKOvasDdhWNXYg9BVp4O+o5f6V/ehm6Oo=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
 github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/Masterminds/sprig v2.22.0+incompatible h1:z4yfnGrZ7netVz+0EDJ0Wi+5VZCSYp4Z0m2dk6cEM60=
 github.com/Masterminds/sprig v2.22.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
@@ -49,6 +63,7 @@ github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+Ce
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b h1:L/QXpzIa3pOvUGt1D1lA5KjYhPBAN/3iWdP7xeFS9F0=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
@@ -66,14 +81,22 @@ github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XL
 github.com/clbanning/x2j v0.0.0-20191024224557-825249438eec/go.mod h1:jMjuTZXRI4dUb/I5gc9Hdhagfvm9+RyrPryS/auMzxE=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
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@@ -86,6 +109,7 @@ github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZm
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@@ -113,14 +137,19 @@ github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWo
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@@ -129,8 +158,10 @@ github.com/go-redis/redis/v8 v8.9.0/go.mod h1:ik7vb7+gm8Izylxu6kf6wG26/t2VljgCfS
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@@ -141,8 +172,12 @@ github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzq
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@@ -170,16 +205,25 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -192,10 +236,15 @@ github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+
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@@ -211,6 +260,7 @@ github.com/hashicorp/go-version v1.2.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09
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@@ -221,8 +271,58 @@ github.com/huandu/xstrings v1.3.2/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq
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@@ -348,6 +468,7 @@ github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTK
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@@ -361,6 +482,7 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
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@@ -373,7 +495,9 @@ github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:
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@@ -382,20 +506,29 @@ github.com/prometheus/common v0.25.0 h1:IjJYZJCI8HZYtqA3xYwGyDzSCy1r4CA2GRh+4vdO
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@@ -406,25 +539,37 @@ github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9
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@@ -438,30 +583,46 @@ github.com/vmihailenco/msgpack v4.0.4+incompatible h1:dSLoQfGFAo3F6OoNhwUmLwVgaU
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@@ -470,6 +631,8 @@ golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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@@ -478,12 +641,17 @@ golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTk
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@@ -497,6 +665,8 @@ golang.org/x/net v0.0.0-20190125091013-d26f9f9a57f3/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -506,6 +676,7 @@ golang.org/x/net v0.0.0-20191105084925-a882066a44e0/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -517,6 +688,7 @@ golang.org/x/net v0.0.0-20211123203042-d83791d6bcd9 h1:0qxwC5n+ttVOINCBeRHO0nq9X
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@@ -525,6 +697,7 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -537,15 +710,20 @@ golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5h
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@@ -559,9 +737,11 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -569,15 +749,20 @@ golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBc
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 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20201208040808-7e3f01d25324 h1:Hir2P/De0WpUhtrKGGjvSb2YxUgyZ7EFOSLIcSSpiwE=
 golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -591,17 +776,30 @@ golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20190206041539-40960b6deb8e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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 golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
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 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.5 h1:ouewzE6p+/VEB31YYnTbEJdi8pFqKp4P4n85vwo3DHA=
+golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -612,21 +810,35 @@ gonum.org/v1/gonum v0.8.2/go.mod h1:oe/vMfY3deqTw+1EZJhuvEW2iwGF1bW9wwu7XCu0+v0=
 gonum.org/v1/netlib v0.0.0-20190313105609-8cb42192e0e0/go.mod h1:wa6Ws7BG/ESfp6dHfk7C6KdzKA7wR7u/rKwOGE66zvw=
 gonum.org/v1/plot v0.0.0-20190515093506-e2840ee46a6b/go.mod h1:Wt8AAjI+ypCyYX3nZBvf6cAIx93T+c/OS2HFAYskSZc=
 google.golang.org/api v0.3.1/go.mod h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=
+google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
+google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
+google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
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 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
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 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190530194941-fb225487d101/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
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 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
+google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
@@ -634,6 +846,7 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
 google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -656,7 +869,9 @@ gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qS
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
+gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
@@ -678,6 +893,8 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 k8s.io/apimachinery v0.0.0-20191123233150-4c4803ed55e3 h1:FErmbNIJruD5GT2oVEjtPn5Ar5+rcWJsC8/PPUkR0s4=
@@ -686,6 +903,7 @@ k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
 k8s.io/kube-openapi v0.0.0-20191107075043-30be4d16710a/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

views/pages/register.gohtml

@@ -1,15 +1,15 @@
 {{define "content"}}
     <form method="post">
         <div class="field">
-            <label for="" class="label">Email</label>
+            <label for="" class="label">Username</label>
             <div class="control">
-                <input type="email" placeholder="e.g. bobsmith@gmail.com" class="input" required>
+                <input type="textfield" name="username" class="input" required>
             </div>
         </div>
         <div class="field">
             <label for="" class="label">Password</label>
             <div class="control">
-                <input type="password" placeholder="*******" class="input" required>
+                <input type="password" name="password" placeholder="*******" class="input" required>
             </div>
         </div>
         <div class="field is-grouped">