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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package schema
import (
"context"
"fmt"
"time"
"github.com/facebook/ent"
gen "github.com/facebook/ent/entc/integration/hooks/ent"
"github.com/facebook/ent/entc/integration/hooks/ent/card"
"github.com/facebook/ent/entc/integration/hooks/ent/hook"
"github.com/facebook/ent/schema/edge"
"github.com/facebook/ent/schema/field"
"github.com/facebook/ent/schema/mixin"
)
// RejectMany rejects all update operations
// that are not on a specific entity.
type RejectUpdate struct {
mixin.Schema
}
func (RejectUpdate) Hooks() []ent.Hook {
return []ent.Hook{
hook.Reject(ent.OpUpdate),
}
}
// Card holds the schema definition for the CreditCard entity.
type Card struct {
ent.Schema
}
func (Card) Mixin() []ent.Mixin {
return []ent.Mixin{
RejectUpdate{},
}
}
func (Card) Hooks() []ent.Hook {
return []ent.Hook{
hook.On(
func(next ent.Mutator) ent.Mutator {
return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
num, ok := m.Field(card.FieldNumber)
if !ok {
return nil, fmt.Errorf("missing card number value")
}
// Validator in hooks.
if len(num.(string)) < 4 {
return nil, fmt.Errorf("card number is too short")
}
return next.Mutate(ctx, m)
})
},
ent.OpCreate,
),
func(next ent.Mutator) ent.Mutator {
return hook.CardFunc(func(ctx context.Context, m *gen.CardMutation) (ent.Value, error) {
m.SetInHook("value was set in hook")
if _, ok := m.Name(); !ok {
m.SetName("unknown")
}
return next.Mutate(ctx, m)
})
},
}
}
func (Card) Fields() []ent.Field {
return []ent.Field{
field.String("number").
Immutable().
Default("unknown").
NotEmpty(),
field.String("name").
Optional().
Comment("Exact name written on card"),
field.Time("created_at").
Default(time.Now),
field.String("in_hook").
Comment("A mandatory field that is set by the hook"),
}
}
func (Card) Edges() []ent.Edge {
return []ent.Edge{
edge.From("owner", User.Type).
Ref("cards").
Unique(),
}
}
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