requiredRule<T> method

String? requiredRule<T>(
  1. T? value
)

Implementation

String? requiredRule<T>(T? value) {
  if (
    value == null ||
    (value is String && value.isEmpty) ||
    (value is bool && value == false) ||
    (value is int && value == 0)
  ) {
    return "Campo Obrigatório";
  }
  return null;
}