snapshot of https://github.com/ent/ent.git (master, 2026-09-15; blobs > 131072B omitted)

entc/integration/multischema/versioned/schema/friendship.go

@@ -0,0 +1,65 @@
+// 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 (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// An example for an ent/schema that mixed in an ent/mixin to define default table schema (in the database).
+
+// Friendship holds the edge schema definition of the Friendship relationship.
+type Friendship struct {
+	ent.Schema
+}
+
+// Mixin defines the schemas that mixed into this schema.
+func (Friendship) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		Mixin{},
+	}
+}
+
+// Fields of the Friendship.
+func (Friendship) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("weight").
+			Default(1),
+		field.Time("created_at").
+			Default(time.Now),
+		field.Int("user_id").
+			Immutable(),
+		field.Int("friend_id").
+			Immutable(),
+	}
+}
+
+// Edges of the Friendship.
+func (Friendship) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.To("user", User.Type).
+			Unique().
+			Required().
+			Immutable().
+			Field("user_id"),
+		edge.To("friend", User.Type).
+			Unique().
+			Required().
+			Immutable().
+			Field("friend_id"),
+	}
+}
+
+// Indexes of the Friendship.
+func (Friendship) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("created_at"),
+	}
+}

entc/integration/multischema/versioned/schema/group.go

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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 (
+	"entgo.io/ent"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+)
+
+// An example for an ent/schema that uses struct embedding to define default table schema (in the database).
+
+// Group holds the schema definition for the Group entity.
+type Group struct {
+	base
+}
+
+// Fields of the Group.
+func (Group) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name").
+			Default("unknown"),
+	}
+}
+
+// Edges of the Group.
+func (Group) Edges() []ent.Edge {
+	return []ent.Edge{
+		// The edge schema (join table) is defaults to the edge owner schema (Group).
+		edge.To("users", User.Type),
+	}
+}

entc/integration/multischema/versioned/schema/mixin.go

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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 (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/mixin"
+)
+
+// This file contains two example of how to define the base schema.
+// 1. Use Mixin and use it in all schemas that reside in "db1".
+// 2. Create a "base" schema and use struct embedding to in all schemas that reside in "db1".
+
+// Example 1:
+
+// Mixin holds the default configuration for most schemas in this package.
+type Mixin struct {
+	mixin.Schema
+}
+
+// Annotations of the Mixin.
+func (Mixin) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Schema("db1"),
+	}
+}
+
+// Example 2:
+
+// Base schema.
+type base struct {
+	ent.Schema
+}
+
+// Annotations of the base schema.
+func (base) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Schema("db1"),
+	}
+}

entc/integration/multischema/versioned/schema/pet.go

@@ -0,0 +1,45 @@
+// 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 (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+)
+
+// Pet holds the schema definition for the Pet entity.
+type Pet struct {
+	ent.Schema
+}
+
+// Fields of the Pet.
+func (Pet) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name").
+			Default("unknown"),
+		field.Int("owner_id").
+			Optional(),
+	}
+}
+
+// Edges of the Pet.
+func (Pet) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("owner", User.Type).
+			Ref("pets").
+			Field("owner_id").
+			Unique(),
+	}
+}
+
+// Annotations of the Pet.
+func (Pet) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Schema("db2"),
+	}
+}

entc/integration/multischema/versioned/schema/user.go

@@ -0,0 +1,50 @@
+// 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 (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"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("name").
+			Default("unknown"),
+	}
+}
+
+// Edges of the User.
+func (User) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.To("pets", Pet.Type),
+		edge.From("groups", Group.Type).
+			Ref("users"),
+		edge.To("friends", User.Type).
+			Through("friendships", Friendship.Type),
+		edge.To("following", User.Type).
+			// An example for an edge that defines the schema of its join table.
+			Annotations(
+				entsql.Schema("db3"),
+			).
+			From("followers"),
+	}
+}
+
+// Annotations of the User.
+func (User) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Schema("db3"),
+	}
+}