simple_form_validations 1.0.1

Simple Form Validations is a Dart package that provides a collection of validators for common data validation scenarios.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:simple_form_validations/simple_form_validations.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Validation Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // TRY THIS: Try running your application with "flutter run". You'll see
        // the application has a purple toolbar. Then, without quitting the app,
        // try changing the seedColor in the colorScheme below to Colors.green
        // and then invoke "hot reload" (save your changes or press the "hot
        // reload" button in a Flutter-supported IDE, or press "r" if you used
        // the command line to start the app).
        //
        // Notice that the counter didn't reset back to zero; the application
        // state is not lost during the reload. To reset the state, use hot
        // restart instead.
        //
        // This works for code too, not just values: Most code changes can be
        // tested with just a hot reload.
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    final formKey = GlobalKey<FormState>();

    return Scaffold(
      body: SafeArea(
        child: Container(
          padding: const EdgeInsetsDirectional.all(22),
          child: Form(
            key: formKey,
            child: Column(
              children: [
                TextFormField(
                  validator: (value) =>
                      SimpleValidations.usernameOrEmailValidator(value),
                  decoration: const InputDecoration(
                    hintText: 'Validator Demo',
                    enabledBorder: OutlineInputBorder(),
                    focusedBorder: OutlineInputBorder(),
                    border: OutlineInputBorder(),
                  ),
                ),
                const SizedBox(height: 22),
                TextFormField(
                  validator: (value) =>
                      SimpleValidations.passwordValidator(value),
                  decoration: const InputDecoration(
                    hintText: 'Strong Password Validator Demo',
                    enabledBorder: OutlineInputBorder(),
                    focusedBorder: OutlineInputBorder(),
                    border: OutlineInputBorder(),
                  ),
                ),
                const SizedBox(height: 22),
                ElevatedButton(
                  onPressed: () {
                    if (formKey.currentState!.validate()) {
                      print("Valid data!");
                    }
                  },
                  child: const Text('Validate'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}