validator method

@override String? validator(BuildContext context, String value)

Implement in subclasses to provide validation logic.

Implementation

@override
String? validator(BuildContext context, String value) {
  if (value.isEmpty) {
    return HyttaHubLocalizations.of(context)!.siteCodeEmptyError;
  }
  if (value.length != 8) {
    return HyttaHubLocalizations.of(context)!.siteCodeLengthError;
  }
  return null;
}