dateValidator static method

String? dateValidator(
  1. String? value, {
  2. String? pattern = "yyyy-MM-dd",
  3. String? errorMessage,
})

validator for date pattern

Implementation

static String? dateValidator(String? value, {String? pattern = "yyyy-MM-dd", String? errorMessage}) {
  if (value != null) {
    return isDateStringValid(value, pattern: pattern) ? null : errorMessage ?? '';
  } else {
    return errorMessage ?? '';
  }
}