custom method

JarNumber custom(
  1. String? validator(
    1. num? value, [
    2. Map<String, dynamic>? allValues
    ]), [
  2. String? message
])

Implementation

JarNumber custom(String? Function(num? value, [Map<String, dynamic>? allValues]) validator, [String? message]) {
  return addValidator((value) {
    if (value == null) return null;
    final validationResult = validator(value, getAllValues());
    return validationResult ?? null;
  });
}