UsernameValidator class

Provides validation rules and methods for validating usernames.

Supports customization of minimum and maximum length, forbidden characters, and allowed character patterns.

Constructors

UsernameValidator()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

getRules({int minLength = 3, int maxLength = 20, Set<String> forbiddenCharacters = const {'@'}, RegExp? allowedPattern}) → List<ValidationRule>

Returns a list of ValidationRules for validating usernames.

validate(String? value, {int minLength = 3, int maxLength = 20, Set<String> forbiddenCharacters = const {'@'}, RegExp? allowedPattern}) → String?

Validates a username string value against configurable constraints.