Stop Writing Form Boilerplate in Flutter — I Built form_forge

Sahil Sharma — Sat, 21 Feb 2026 09:26:35 +0000

Every Flutter developer has written this code a hundred times:

final _emailController = TextEditingController();
final _passwordController = TextEditingController();

@override
void dispose() {
  _emailController.dispose();
  _passwordController.dispose();
  super.dispose();
}

Controllers. Dispose. Validators. setState. Error text. For every. Single. Form.

I built form_forge to make this go away forever.

What It Does

You write this:

@FormForge()
class LoginForm {
  @IsRequired()
  @IsEmail()
  late final String email;

  @IsRequired()
  @MinLength(8)
  late final String password;
}

Run dart run build_runner build.

You get:

LoginFormController — typed fields, validation, submission handling
LoginFormWidget — drop-in widget with error display
LoginFormData — typed data for your submit callback

12 lines. Not 87.

The Cool Parts

Cross-field validation in one line:

@MustMatch('password', message: 'Passwords do not match')
late final String confirmPassword;

Async validation (check email uniqueness):

@AsyncValidate()
late final String email;

// Register at runtime:
controller.registerAsyncValidator('email', (value) async {
  return await api.emailExists(value) ? 'Already taken' : null;
});

Auto widget mapping:

String → TextFormField
int → TextFormField with number keyboard
bool → CheckboxListTile

Works with any state management — Provider, Riverpod, Bloc, or vanilla setState.

Install

dependencies:
  form_forge: ^0.1.0

dev_dependencies:
  form_forge_generator: ^0.1.0
  build_runner: ^2.4.0

Links

It's v0.1.0 — stars and feedback welcome!

DEV Community: Sahil Sharma

Stop Writing Form Boilerplate in Flutter — I Built form_forge

What It Does

The Cool Parts

Install

Links