entc/gen: support Append<F> for JSON array fields (#2975)

examples/entcpkg/README.md

@@ -20,12 +20,16 @@ import (
 )
 
 func main() {
-	// A usage for custom templates with external functions.
-	// One template is defined in the option below, and the
-	// second template is provided with the `Templates` field.
-	opts := []entc.Option{}
+	opts := []entc.Option{
+		entc.Dependency(
+			entc.DependencyType(&http.Client{}),
+		),
+		entc.TemplateFiles(
+			"template/debug.tmpl",
+			"template/stringer.tmpl",
+		),
+    }
 	err := entc.Generate("./schema", &gen.Config{
-		// Target: "./gen", If you want generated files placed under custom path
 		Header: `
 			// Copyright 2019-present Facebook Inc. All rights reserved.
 			// This source code is licensed under the Apache 2.0 license found
@@ -33,13 +37,11 @@ func main() {
 
 			// Code generated by ent, DO NOT EDIT.
 		`,
+		// A usage for custom templates with external functions.
 		Templates: []*gen.Template{
-			// Custom templates can be provided by entc.Extension (see below),
-			// or by setting templates on the gen.Config object.
-			//
 			gen.MustParse(gen.NewTemplate("static").
 				Funcs(template.FuncMap{"title": strings.ToTitle}).
-				ParseFiles("./template/t1.tmpl")), // create template files under ent/template
+				ParseFiles("template/static.tmpl")),
 		},
 	}, opts...)
 	if err != nil {

examples/privacytenant/ent/mutation.go

@@ -859,6 +859,7 @@ type UserMutation struct {
 	id            *int
 	name          *string
 	foods         *[]string
+	appendfoods   []string
 	clearedFields map[string]struct{}
 	tenant        *int
 	clearedtenant bool
@@ -1043,6 +1044,7 @@ func (m *UserMutation) ResetName() {
 // SetFoods sets the "foods" field.
 func (m *UserMutation) SetFoods(s []string) {
 	m.foods = &s
+	m.appendfoods = nil
 }
 
 // Foods returns the value of the "foods" field in the mutation.
@@ -1071,9 +1073,23 @@ func (m *UserMutation) OldFoods(ctx context.Context) (v []string, err error) {
 	return oldValue.Foods, nil
 }
 
+// AppendFoods adds s to the "foods" field.
+func (m *UserMutation) AppendFoods(s []string) {
+	m.appendfoods = append(m.appendfoods, s...)
+}
+
+// AppendedFoods returns the list of values that were appended to the "foods" field in this mutation.
+func (m *UserMutation) AppendedFoods() ([]string, bool) {
+	if len(m.appendfoods) == 0 {
+		return nil, false
+	}
+	return m.appendfoods, true
+}
+
 // ClearFoods clears the value of the "foods" field.
 func (m *UserMutation) ClearFoods() {
 	m.foods = nil
+	m.appendfoods = nil
 	m.clearedFields[user.FieldFoods] = struct{}{}
 }
 
@@ -1086,6 +1102,7 @@ func (m *UserMutation) FoodsCleared() bool {
 // ResetFoods resets all changes to the "foods" field.
 func (m *UserMutation) ResetFoods() {
 	m.foods = nil
+	m.appendfoods = nil
 	delete(m.clearedFields, user.FieldFoods)
 }
 

examples/privacytenant/ent/user_update.go

@@ -13,6 +13,7 @@ import (
 
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/dialect/sql/sqljson"
 	"entgo.io/ent/examples/privacytenant/ent/group"
 	"entgo.io/ent/examples/privacytenant/ent/predicate"
 	"entgo.io/ent/examples/privacytenant/ent/user"
@@ -52,6 +53,12 @@ func (uu *UserUpdate) SetFoods(s []string) *UserUpdate {
 	return uu
 }
 
+// AppendFoods appends s to the "foods" field.
+func (uu *UserUpdate) AppendFoods(s []string) *UserUpdate {
+	uu.mutation.AppendFoods(s)
+	return uu
+}
+
 // ClearFoods clears the value of the "foods" field.
 func (uu *UserUpdate) ClearFoods() *UserUpdate {
 	uu.mutation.ClearFoods()
@@ -199,6 +206,11 @@ func (uu *UserUpdate) sqlSave(ctx context.Context) (n int, err error) {
 			Column: user.FieldFoods,
 		})
 	}
+	if value, ok := uu.mutation.AppendedFoods(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, user.FieldFoods, value)
+		})
+	}
 	if uu.mutation.FoodsCleared() {
 		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
 			Type:   field.TypeJSON,
@@ -298,6 +310,12 @@ func (uuo *UserUpdateOne) SetFoods(s []string) *UserUpdateOne {
 	return uuo
 }
 
+// AppendFoods appends s to the "foods" field.
+func (uuo *UserUpdateOne) AppendFoods(s []string) *UserUpdateOne {
+	uuo.mutation.AppendFoods(s)
+	return uuo
+}
+
 // ClearFoods clears the value of the "foods" field.
 func (uuo *UserUpdateOne) ClearFoods() *UserUpdateOne {
 	uuo.mutation.ClearFoods()
@@ -475,6 +493,11 @@ func (uuo *UserUpdateOne) sqlSave(ctx context.Context) (_node *User, err error)
 			Column: user.FieldFoods,
 		})
 	}
+	if value, ok := uuo.mutation.AppendedFoods(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, user.FieldFoods, value)
+		})
+	}
 	if uuo.mutation.FoodsCleared() {
 		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
 			Type:   field.TypeJSON,