boolean_validation

A Dart package providing various validation utilities for common data types.

Validation Functions

Function	Description	Example Usage
validateEmail	Validates if a string is a properly formatted email.	validateEmail('test@example.com')
validateMobileNumber	Validates if a string is a valid mobile number.	validateMobileNumber('1234567890')
validateInteger	Validates if a string is a valid integer.	validateInteger('123')
validateUrl	Validates if a string is a properly formatted URL.	validateUrl('http://example.com')
validateDate	Validates if a string is a valid date (YYYY-MM-DD).	validateDate('2020-01-01')
validateCreditCard	Validates if a string is a valid credit card number.	validateCreditCard('4111111111111111')
validateUsername	Validates if a string is a valid username.	validateUsername('username_123')

Usage

Add the following to your pubspec.yaml:

dependencies:
  boolean_validation: ^0.1.1

Import the package in your Dart file:

import 'package:boolean_validation/boolean_validation.dart';

void main() {
  final Validators validators = Validators();

  // Example: Validate Email
  String? emailValidation = validators.validateEmail(
      'test@example.com', 'Email is required', 'Invalid email');
  print(emailValidation); // Output: null (indicating valid email)
}

Validators Class

validateEmail

String? validateEmail(String? value, String? emailRequiredMessage, String? validEmailMessage);

• Description: Validates if the given string is a properly formatted email.
• Parameters:
  • value: The email string to validate.
  • emailRequiredMessage: Custom message when email is required but not provided.
  • validEmailMessage: Custom message when email format is invalid.
• Returns: Error message if invalid, null if valid.

validateMobileNumber

String? validateMobileNumber(String? value, String? mobileRequiredMessage,
    String? validMobileMessage);

• Description: Validates if the given string is a valid mobile number.
• Parameters:
  • value: The mobile number string to validate.
  • mobileRequiredMessage: Custom message when mobile number is required but not provided.
  • validMobileMessage: Custom message when mobile number format is invalid.
• Returns: Error message if invalid, null if valid.

validateInteger

String? validateInteger(String? value, String? integerRequiredMessage);

• Description: Validates if the given string is a valid integer.
• Parameters:
  • value: The integer string to validate.
  • integerRequiredMessage: Custom message when integer is required but not provided.
• Returns: Error message if invalid, null if valid.

validateUrl

String? validateUrl(String value, String? urlRequiredMessage, String? validUrlMessage);

• Description: Validates if the given string is a properly formatted URL.
• Parameters:
  • value: The URL string to validate.
  • urlRequiredMessage: Custom message when URL is required but not provided.
  • validUrlMessage: Custom message when URL format is invalid.
• Returns: Error message if invalid, null if valid.

validateDate

String? validateDate(String value, String? dateRequiredMessage, String? validDateMessage);

• Description: Validates if the given string is a valid date in YYYY-MM-DD format.
• Parameters:
  • value: The date string to validate.
  • dateRequiredMessage: Custom message when date is required but not provided.
  • validDateMessage: Custom message when date format is invalid.
• Returns: Error message if invalid, null if valid.

validateCreditCard

String? validateCreditCard(String value, String? cardRequiredMessage, String? validCardMessage);

• Description: Validates if the given string is a valid credit card number.
• Parameters:
  • value: The credit card number string to validate.
  • cardRequiredMessage: Custom message when credit card number is required but not provided.
  • validCardMessage: Custom message when credit card number is invalid.
• Returns: Error message if invalid, null if valid.

validateUsername

String? validateUsername(String value, String? usernameRequiredMessage,
    String? validUsernameMessage);

• Description: Validates if the given string is a valid username.
• Parameters:
  • value: The username string to validate.
  • usernameRequiredMessage: Custom message when username is required but not provided.
  • validUsernameMessage: Custom message when username format is invalid.
• Returns: Error message if invalid, null if valid.

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