function __construct()
 {
     parent::__construct();
 }
 function view($param = null)
 {
     if (empty($this->content)) {
         if (empty($this->user->appraisee) && empty($this->user->countersignee)) {
             header('Location: survey?action=renderForm&r=self&u=' . $this->user->username . '&uid=' . $this->user->availiblePeriod['uid']);
         }
     }
     if (!empty($param)) {
         parent::view($param);
     } else {
         parent::view();
     }
 }