buildValidator method

Implementation

@override
AntdFormRuleValidator? buildValidator() {
  return (item, value, formValue) async {
    var currentLen = _getLen(value);
    if (max != null && currentLen > max!) {
      return "长度不能大于$max";
    }
    if (min != null && currentLen < min!) {
      return "长度不能小于$min";
    }
    return null;
  };
}