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

examples/migration/ent/schema/payment.go

@@ -0,0 +1,63 @@
+// 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"
+	"entgo.io/ent/schema/index"
+)
+
+// Payment holds the schema definition for the Payment entity.
+type Payment struct {
+	ent.Schema
+}
+
+// Fields of the Payment.
+func (Payment) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("card_id"),
+		field.Float("amount").
+			Positive(),
+		field.Enum("currency").
+			Values("USD", "EUR", "VND", "ILS"),
+		field.Time("time"),
+		field.String("description"),
+		field.Enum("status").
+			Values("pending", "completed", "failed"),
+	}
+}
+
+// Edges of the Payment.
+func (Payment) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("card", Card.Type).
+			Ref("payments").
+			Unique().
+			Required().
+			Field("card_id"),
+	}
+}
+
+// Indexes of the Payment.
+func (Payment) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("status", "time"),
+	}
+}
+
+// Annotations of the Payment.
+func (Payment) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		// Named check constraints are compared by their name.
+		// Thus, the definition does not need to be normalized.
+		entsql.Checks(map[string]string{
+			"amount_positive": "(`amount` > 0)",
+		}),
+	}
+}