Overview
form_validator is a lightweight and intuitive package for validating form fields in Flutter applications. It provides a simple API to define validation rules such as required fields, email format, length constraints, and custom validators. Designed specifically for Flutter's FormField widgets, it streamlines the process of ensuring user input meets specified criteria without boilerplate code. The library integrates seamlessly with existing forms and supports multiple platforms including Android, iOS, Web, macOS, Windows, and Linux.
Use cases
- Validating user registration forms
- Checking email and password inputs
- Ensuring field length requirements
- Implementing custom validation logic
- Simplifying form state management
Key features
- Minimal setup and configuration
- Supports required, email, length, and custom validators
- Works with Flutter's built-in FormField widgets
- Cross-platform compatibility
- Clear error messages on validation failure
Suitable for
- Beginner to intermediate Flutter developers
- Apps requiring basic to moderate form validation
- Projects prioritizing clean, readable validation code
Considerations
- Limited to basic validation scenarios
- No built-in internationalization support
- Does not handle complex nested form structures