advanced_forms 0.2.0+2

Flutter form validation and state management — typed controllers for text, checkbox, dropdown and multi-select fields, async and cross-field validators, and subforms.

example/example.md

advanced_forms example app

A gallery app for advanced_forms: one screen per documented pattern, reachable from the home page. Nearly every pattern named in README.md and MIGRATION.md has a working screen here — multi-select fields and read-only fields are the exceptions, documented in README — Field controllers and README — Read-only fields and server-side errors only.

How to run

cd example
flutter pub get
flutter run

Any Flutter target works — the app uses no platform plugins.

Screen guide

Screen (lib/screens/)	Demonstrates	Explained in
simple_form.dart	Submit-time validation, async email check, timeout / failureToError, the hasFailedValidation banner, canSubmit on the button	README — Async validation
password_form.dart	Cross-field validation via subscribeToFields, a per-field validation mode via setValidationMode, a custom error type holding several rule violations	README — Validation that depends on another field
optimized_rendering_form.dart	Granular rebuilds and the child: optimization across three layouts	README — Rendering fields
quiz_form.dart	Applying a server response with setError / setError(null)	README — Read-only fields and server-side errors
complex_form.dart	Single-select dropdowns and swapping the active subform with addSubform / removeSubform	README — Field controllers, README — Subforms
delivery_form.dart	A dynamic list of subforms, validated and disposed by the parent	README — Subforms
step_form.dart	A multi-page wizard: one subform per page in a PageView, the wizard provided above them, await step.validate() on Next, the parent's validate() on Submit, and a conditional page that setValidationEnabled(false) drops from both the flow and the validation	README — Subforms
scroll_form.dart	Scrolling to the first invalid field with field.focusNode, plus a plain Stream for one-off UI events	README — Rendering fields, MIGRATION 8

lib/widgets/ holds the reusable field widgets referenced from README — text, password, dropdown and switch fields — ready to copy and restyle. lib/controllers/password_field_controller.dart is a custom field controller written against AdvancedTextFieldController.