flutter_validators 1.1.0

A pure dart package of String validators and sanitizers. Inspired by validator.js.

example/lib/main.dart

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

void main() => runApp(const MyApp());

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Validators Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        inputDecorationTheme: const InputDecorationTheme(
          border: OutlineInputBorder(),
        ),
      ),
      home: const ExampleScreen(),
    );
  }
}

class ExampleScreen extends StatefulWidget {
  const ExampleScreen({super.key});

  @override
  State<ExampleScreen> createState() => _ExampleScreenState();
}

class _ExampleScreenState extends State<ExampleScreen> {
  final _formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Flutter Validators Example')),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            children: [
              TextFormField(
                decoration: const InputDecoration(labelText: 'Email'),
                validator: Validator.email(),
                autovalidateMode: AutovalidateMode.onUserInteraction,
              ),
              const SizedBox(height: 16),
              TextFormField(
                decoration: const InputDecoration(labelText: 'URL'),
                validator: Validator.url(errorMessage: 'Please provide a valid URL'),
                autovalidateMode: AutovalidateMode.onUserInteraction,
              ),
              const SizedBox(height: 16),
              TextFormField(
                decoration: const InputDecoration(labelText: 'Credit Card'),
                validator: Validator.creditCard(),
                autovalidateMode: AutovalidateMode.onUserInteraction,
              ),
              const SizedBox(height: 16),
              TextFormField(
                decoration: const InputDecoration(labelText: 'Age (Numeric)'),
                validator: Validator.numeric(),
                autovalidateMode: AutovalidateMode.onUserInteraction,
              ),
              const SizedBox(height: 32),
              ElevatedButton(
                onPressed: () {
                  if (_formKey.currentState!.validate()) {
                    ScaffoldMessenger.of(context).showSnackBar(
                      const SnackBar(content: Text('Form is valid!')),
                    );
                  }
                },
                child: const Text('Submit'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}