# forms-and-input

> Claude/Codex skill by [@zakariaf](https://omgskills.com/library/zakariaf/index.md) · 61 stars · Updated 2026-09-23

Enforces Form + GlobalKey\<FormState\> with TextFormField whose sync validator returns a localized String? (never a hardcoded literal), AutovalidateMode.onUserInteraction, async availability checks moved OUT of the sync validator into a debounced Riverpod Notifier that surfaces errors through state, FocusNode/TextInputAction/onFieldSubmitted traversal, keyboardType/textCapitalization/autofillHints/TextInputFormatter, mandatory TextEditingController/FocusNode disposal, submit-enabled derived from validity (not stored), and scoped rebuilds so a keystroke never rebuilds the whole form. Use when building a Form, TextFormField, or FormField; wiring sync or async validation; managing FocusNode, focus traversal, autofocus, TextInputAction, onFieldSubmitted, or onEditingComplete; setting keyboardType, autofillHints, textCapitalization, or InputFormatter; disposing TextEditingController/FocusNode; enabling/disabling a submit button; or handling keyboard-avoidance on submit.

Tags: agent-skills, ai-agents, best-practices, claude-code, codex, coding-agent, cursor, dart, dartlang, developer-tools, drift, flutter, flutter-architecture, github-copilot, go-router, llm, material-design, mvvm, riverpod, skills

## Install

```sh
git clone https://github.com/zakariaf/Flutter-Skills /tmp/Flutter-Skills && ln -s /tmp/Flutter-Skills/skills/forms-and-input ~/.claude/skills/forms-and-input
```

## From README

Forms and input Text input is where most disposal leaks, un-localized strings, and jank enter a Flutter app. A form is a small state machine: fields hold text, a FormState validates them, and a ViewModel owns anything that touches the network or the clock. Keep those three responsibilities separate. Read the reference for the task at hand: references/validation-sync-and-async.md — sync validator returning localized String?, AutovalidateMode choice, and the debounced-async-in-a-Notifier pattern (why async must NOT live in the sync validator). references/focus-and-keyboard.md — FocusNode lifecycle, traversal order, autofocus, FocusTraversalGroup, TextInputAction, onFieldSubmitted/onEditingComplete, keyboardType, autofillHints, TextInputFormatter, keyboard-avoidance. Run scripts/checkforms.sh before a PR. Non-negotiable rules Every TextEditingController and FocusNode created in a State is disposed in dispose().

## Links

- HTML page: https://omgskills.com/library/zakariaf/flutter-skills/skills/forms-and-input/
- GitHub: https://github.com/zakariaf/Flutter-Skills
- Author: [@zakariaf](https://omgskills.com/library/zakariaf/index.md)

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