validation_assistant 2.0.1

Very simple and light form validation helper. Its main task is to more conveniently use its own validation functions.

Very simple and light form validation assistant.

Use your own validation functions with great convenience.

Features

• Very simple.
• Very light.
• Zero dependencies.

Getting started

    flutter pub get validation_assistant

or

  dependencies:
    validation_assistant: 1.1.2

Usage

final validationAssistant = ValidationAssistant();

...

// with default messages
TextFormField(
  ...
  validator: validationAssistant
    ..required()
    ..maxLength(10)
    ..regExp(r'^\d+$')
)

// with custom messages.
TextFormField(
  ...
  validator: validationAssistant
    ..required('custom error message')
    ..maxLength(10, 'custom error message')
    ..regExp(r'^\d+$', 'custom error message')
)

You can add your own function to check.

final validationAssistant = ValidationAssistant();

...
    
final String? customValidationFunction(String? value) {
  if (value < 5) {
    return 'custom error message';  
  }
  return null;
}

...

TextFormField(
  ...
  validator: validationAssistant
    ..required('custom error message')
    ..add(customValidationFunction)
)