unique static method

Future<bool> unique(
  1. Map<String, dynamic> data,
  2. dynamic value,
  3. String values
)

Check field is unique

Implementation

static Future<bool> unique(
  Map<String, dynamic> data,
  dynamic value,
  String values,
) async {
  final resolver = _uniqueValidationResolver;
  if (resolver == null) {
    throw StateError(
      'The unique validation rule requires an ORM/database package to '
      'register a unique validation resolver.',
    );
  }
  return resolver(data, value, values);
}