entc/gen: add support for DeleteOne with predicates (#3271)

Also, fixed a bug in DeleteOne.Exec where it was skipping NotFoundError

examples/start/ent/car_delete.go

@@ -73,6 +73,12 @@ type CarDeleteOne struct {
 	cd *CarDelete
 }
 
+// Where appends a list predicates to the CarDelete builder.
+func (cdo *CarDeleteOne) Where(ps ...predicate.Car) *CarDeleteOne {
+	cdo.cd.mutation.Where(ps...)
+	return cdo
+}
+
 // Exec executes the deletion query.
 func (cdo *CarDeleteOne) Exec(ctx context.Context) error {
 	n, err := cdo.cd.Exec(ctx)
@@ -88,5 +94,7 @@ func (cdo *CarDeleteOne) Exec(ctx context.Context) error {
 
 // ExecX is like Exec, but panics if an error occurs.
 func (cdo *CarDeleteOne) ExecX(ctx context.Context) {
-	cdo.cd.ExecX(ctx)
+	if err := cdo.Exec(ctx); err != nil {
+		panic(err)
+	}
 }

examples/start/ent/group_delete.go

@@ -73,6 +73,12 @@ type GroupDeleteOne struct {
 	gd *GroupDelete
 }
 
+// Where appends a list predicates to the GroupDelete builder.
+func (gdo *GroupDeleteOne) Where(ps ...predicate.Group) *GroupDeleteOne {
+	gdo.gd.mutation.Where(ps...)
+	return gdo
+}
+
 // Exec executes the deletion query.
 func (gdo *GroupDeleteOne) Exec(ctx context.Context) error {
 	n, err := gdo.gd.Exec(ctx)
@@ -88,5 +94,7 @@ func (gdo *GroupDeleteOne) Exec(ctx context.Context) error {
 
 // ExecX is like Exec, but panics if an error occurs.
 func (gdo *GroupDeleteOne) ExecX(ctx context.Context) {
-	gdo.gd.ExecX(ctx)
+	if err := gdo.Exec(ctx); err != nil {
+		panic(err)
+	}
 }

examples/start/ent/user_delete.go

@@ -73,6 +73,12 @@ type UserDeleteOne struct {
 	ud *UserDelete
 }
 
+// Where appends a list predicates to the UserDelete builder.
+func (udo *UserDeleteOne) Where(ps ...predicate.User) *UserDeleteOne {
+	udo.ud.mutation.Where(ps...)
+	return udo
+}
+
 // Exec executes the deletion query.
 func (udo *UserDeleteOne) Exec(ctx context.Context) error {
 	n, err := udo.ud.Exec(ctx)
@@ -88,5 +94,7 @@ func (udo *UserDeleteOne) Exec(ctx context.Context) error {
 
 // ExecX is like Exec, but panics if an error occurs.
 func (udo *UserDeleteOne) ExecX(ctx context.Context) {
-	udo.ud.ExecX(ctx)
+	if err := udo.Exec(ctx); err != nil {
+		panic(err)
+	}
 }