function __construct()
 {
     parent::__construct();
     if ($user = session('user')) {
         $this->redirect('/labs/' . $user['labId'] . '/admin');
     }
 }
 function __construct()
 {
     parent::__construct();
     if (empty($_GET['labName'])) {
         $this->error();
     } else {
         if ($this->isExist($_GET['labName'])) {
             $this->doCookie($this->labId);
             $this->labModel = new LabModel($this->labId);
         } else {
             $this->error();
         }
     }
 }