public function checkLoginname($loginname)
 {
     $operator = new \Home\Model\OperatorModel();
     $result = $operator->checkLoginname($loginname);
     if (!empty($result) && count($result) >= 1) {
         $data = "false";
     } else {
         $data = "true";
     }
     $this->ajaxReturn($data);
 }