Validator class

Methods

addRule(ValidationRule rule) → Validator

Adds a custom rule class.

alpha({String? message}) → Validator

Ensures the value contains only alphabetic characters.

alphaNumeric({String? message}) → Validator

Ensures the value contains only alphanumeric characters.

base64({String? message}) → Validator

Validates that the string is properly Base64 encoded.

build() → FormFieldValidator<String>

Builds the final validator function.

contains(String substring, {String? message}) → Validator

Ensures the value contains a specific substring.

countryCode({String? message}) → Validator

Validates a standard E.164 country dial code.

creditCard({String? message}) → Validator

Validates credit card numbers using the standard Luhn algorithm.

custom(String? validator(String? value)) → Validator

Adds a custom inline validator.

date({String? message}) → Validator

Validates that the input is a valid date.

email({String? message}) → Validator

Validates an email address.

endsWith(String suffix, {String? message}) → Validator

Ensures the value ends with a specific suffix.

equals(String value, {String? message}) → Validator

Ensures the value exactly equals a hardcoded string.

hexColor({String? message}) → Validator

Validates a standard hex color string.

inList(List<String> values, {String? message}) → Validator

Ensures the value exactly matches one of the items in the provided list.

ipAddress({bool v4Only = false, bool v6Only = false, String? message}) → Validator

Validates standard IPv4 and/or IPv6 addresses.

json({String? message}) → Validator

Validates that the string is valid JSON.

lowercase({String? message}) → Validator

Ensures the value is strictly lowercase.

macAddress({String? message}) → Validator

Validates a standard MAC address.

match(String? getValue(), {String? message}) → Validator

Validates that the input matches another field.

maxLength(int max, {String? message}) → Validator

Validates a maximum length.

minLength(int min, {String? message}) → Validator

Validates a minimum length.

noSpecialChars({String allowed = '', String? message}) → Validator

Ensures there are no special characters.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notEquals(String value, {String? message}) → Validator

Ensures the value does NOT equal a hardcoded string.

notInList(List<String> values, {String? message}) → Validator

Ensures the value does NOT match any item in the provided list.

numeric({String? message}) → Validator

Validates that the input is numeric.

password({int minLength = 8, bool requireUppercase = true, bool requireLowercase = true, bool requireNumber = true, bool requireSpecialChar = true, String? message}) → Validator

An all-in-one strong password validator rule.

phone({RegExp? pattern, PhoneCountry? country, String? message}) → Validator

Validates a phone number, optionally enforcing a specific country.

regex(RegExp pattern, {required String message}) → Validator

Validates against a custom regex pattern.

required({String? message}) → Validator

Ensures the field is not null or empty.

slug({String? message}) → Validator

Validates a URL-friendly slug.

startsWith(String prefix, {String? message}) → Validator

Ensures the value starts with a specific prefix.

toString() → String

A string representation of this object.

inherited

uppercase({String? message}) → Validator

Ensures the value is strictly uppercase.

url({bool requireHttps = false, String? message}) → Validator

Validates a URL.

uuid({String? message}) → Validator

Validates a standard UUID.