maxLength static method

String? maxLength(
  1. String? value,
  2. int max, {
  3. String fieldName = 'Field',
})

Implementation

static String? maxLength(String? value, int max,
    {String fieldName = 'Field'}) {
  if (value == null || value.trim().isEmpty) return '$fieldName is required';
  if (value.length > max) return '$fieldName must be at most $max characters';
  return null;
}