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

entc/integration/edgeschema/ent/schema/process.go

@@ -0,0 +1,81 @@
+// 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"
+)
+
+// An example for an edge-schema (AttachedFile) that uses a custom name for its edges
+// (not foreign-keys) and Ent matches by the schema types and not foreign-key names.
+
+// Process holds the edge schema definition of the Process relationship.
+type Process struct {
+	ent.Schema
+}
+
+// Edges of the Process.
+func (Process) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.To("files", File.Type).
+			Through("attached_files", AttachedFile.Type).
+			Comment("Files that were attached by this process"),
+	}
+}
+
+// File holds the edge schema definition of the File relationship.
+type File struct {
+	ent.Schema
+}
+
+// Fields of the File.
+func (File) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name"),
+	}
+}
+
+// Edges of the File.
+func (File) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("processes", Process.Type).
+			Ref("files"),
+	}
+}
+
+// AttachedFile holds the edge schema definition of the File relationship.
+type AttachedFile struct {
+	ent.Schema
+}
+
+// Fields of the AttachedFile.
+func (AttachedFile) Fields() []ent.Field {
+	return []ent.Field{
+		field.Time("attach_time").
+			Default(time.Now),
+		field.Int("f_id"),
+		field.Int("proc_id"),
+	}
+}
+
+// Edges of the AttachedFile.
+func (AttachedFile) Edges() []ent.Edge {
+	return []ent.Edge{
+		// Note: the two following edges use different name conventions (e.g., f_id <> file_id), but
+		// Ent knows how to resolve this as there is only one usage of each type in this declaration.
+		edge.To("fi", File.Type).
+			Required().
+			Unique().
+			Field("f_id"),
+		edge.To("proc", Process.Type).
+			Required().
+			Unique().
+			Field("proc_id"),
+	}
+}