custom method

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

Implementation

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