86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright 2019-present Facebook Inc. All rights reserved.
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// This source code is licensed under the Apache 2.0 license found
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// in the LICENSE file in the root directory of this source tree.
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package schema
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import (
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"context"
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"fmt"
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"time"
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"entgo.io/ent"
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"entgo.io/ent/dialect/sql"
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gen "entgo.io/ent/entc/integration/hooks/ent"
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"entgo.io/ent/entc/integration/hooks/ent/hook"
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"entgo.io/ent/entc/integration/hooks/ent/intercept"
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"entgo.io/ent/schema/field"
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"entgo.io/ent/schema/mixin"
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)
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type SoftDeleteMixin struct {
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mixin.Schema
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}
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func (SoftDeleteMixin) Fields() []ent.Field {
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return []ent.Field{
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field.Time("delete_time").
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Optional(),
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}
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}
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type softDeleteKey struct{}
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// SkipSoftDelete returns a new context that skips the soft-delete interceptor/mutators.
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func SkipSoftDelete(parent context.Context) context.Context {
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return context.WithValue(parent, softDeleteKey{}, true)
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}
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func (d SoftDeleteMixin) Interceptors() []ent.Interceptor {
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return []ent.Interceptor{
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intercept.TraverseFunc(func(ctx context.Context, q intercept.Query) error {
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// Skip soft-delete, means include soft-deleted entities.
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if skip, _ := ctx.Value(softDeleteKey{}).(bool); skip {
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return nil
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}
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d.P(q)
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return nil
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}),
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}
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}
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func (d SoftDeleteMixin) Hooks() []ent.Hook {
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return []ent.Hook{
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hook.On(
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func(next ent.Mutator) ent.Mutator {
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return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
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// Skip soft-delete, means delete the entity permanently.
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if skip, _ := ctx.Value(softDeleteKey{}).(bool); skip {
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return next.Mutate(ctx, m)
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}
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mx, ok := m.(interface {
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SetOp(ent.Op)
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Client() *gen.Client
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SetDeleteTime(time.Time)
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WhereP(...func(*sql.Selector))
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})
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if !ok {
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return nil, fmt.Errorf("unexpected mutation type %T", m)
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}
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d.P(mx)
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mx.SetOp(ent.OpUpdate)
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mx.SetDeleteTime(time.Now())
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return mx.Client().Mutate(ctx, m)
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})
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},
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ent.OpDeleteOne|ent.OpDelete,
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),
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}
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}
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func (d SoftDeleteMixin) P(w interface{ WhereP(...func(*sql.Selector)) }) {
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w.WhereP(
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sql.FieldIsNull(d.Fields()[0].Descriptor().Name),
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)
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}
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