validate method

@override Map<String, dynamic>? validate(AbstractControl control)

Validates the control.

Implementation

@override
Map<String, dynamic>? validate(AbstractControl<dynamic> control) {
  if (control.value == null) {
    return <String, dynamic>{ValidationMessage.any: true};
  }

  assert(control.value is Iterable<T>,
      '''Expected the control value to be of type ${(Iterable<T>).runtimeType}
      but found type ${control.value.runtimeType.toString()}.''');

  final iterable = control.value as Iterable<T>;
  return iterable.any(test)
      ? null
      : <String, dynamic>{ValidationMessage.any: true};
}