validator method

  1. @override
PasswordValidationError? validator(
  1. String? value
)
override

A function that must return a validation error if the provided value is invalid and null otherwise.

Implementation

@override
PasswordValidationError? validator(String? value) {
  if (value == null || value.trim().isEmpty) {
    return PasswordValidationError.empty;
  } else if (!AppRegExp.passwordRegExp.hasMatch(value)) {
    return PasswordValidationError.invalid;
  } else {
    return null;
  }
}