name static method

Implementation

static Validator name() {
  return (String? value) {
    if (value!.isEmpty) {
      return "Field cannot be empty.";
    }
    final nameRegExp = RegExp(r'^[A-Za-z]{2,}\s+[A-Za-z]{2,}$');
    if (!nameRegExp.hasMatch(value.trim())) {
      return "Enter first and last name, separated by space";
    }
    return null;
  };
}