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doc: add reference to transaction hooks in hooks page

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Ariel Mashraki
2020-10-11 15:11:27 +03:00
committed by Ariel Mashraki
parent fae1956828
commit 479baa8131
1 changed files with 17 additions and 8 deletions
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25
doc/md/hooks.md
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@@ -115,22 +115,26 @@ There are ~2 ways to do this:
```go
// Option 1: use type assertion.
client.Use(func(next ent.Mutator) ent.Mutator {
return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
if ns, ok := m.(interface{ SetName(string) }); ok {
ns.SetName("Ariel Mashraki")
}
return next.Mutate(ctx, m)
type NameSetter interface {
SetName(value string)
}
return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
// A schema with a "name" field must implement the NameSetter interface.
if ns, ok := m.(NameSetter); ok {
ns.SetName("Ariel Mashraki")
}
return next.Mutate(ctx, m)
})
})
// Option 2: use the generic ent.Mutation interface.
client.Use(func(next ent.Mutator) ent.Mutator {
return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
if err := m.SetField("name", "Ariel Mashraki"); err != nil {
if err := m.SetField("name", "Ariel Mashraki"); err != nil {
// An error is returned, if the field is not defined in
// the schema, or if the type mismatch the field type.
}
return next.Mutate(ctx, m)
return next.Mutate(ctx, m)
})
})
```
@@ -172,7 +176,7 @@ func (Card) Hooks() []ent.Hook {
return next.Mutate(ctx, m)
})
},
// Limit the hook only for these operations.
// Limit the hook only for these operations.
ent.OpCreate|ent.OpUpdate|ent.OpUpdateOne,
),
// Second hook.
@@ -238,3 +242,8 @@ func (SomeMixin) Hooks() []ent.Hook {
}
}
```
## Transaction Hooks
Hooks can also be registered on active transactions, and will be executed on `Tx.Commit` or `Tx.Rollback`.
For more information, read about it in the [transactions page](transactions.md#hooks).