maxYear static method

String? maxYear(
  1. DateTime? value,
  2. int maxYear, {
  3. String? fieldName,
})

Validates maximum year.

Implementation

static String? maxYear(DateTime? value, int maxYear, {String? fieldName}) {
  if (value == null) return null;

  if (value.year > maxYear) {
    return '${fieldName ?? "Year"} must be $maxYear or earlier.';
  }

  return null;
}