maxLength static method

String? maxLength(
  1. String? value,
  2. int length, {
  3. String? message,
})

Implementation

static String? maxLength(String? value, int length,
    {String? message}) {
  if (value == null || value.isEmpty) return null;

  if (value.length > length) {
    return message ?? "Maximum $length characters allowed";
  }
  return null;
}