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.isEmpty) return PasswordValidationError.empty;
  return value.length >= 6 ? null : PasswordValidationError.tooShort;
}