public function actionAjaxChangeStatus($status, $id)
 {
     $content = null;
     $save = true;
     $mission = Mission::GetById(intval($id));
     ControllerSecurityUtil::resolveAccessCanCurrentUserWriteModel($mission);
     if ($status == Mission::STATUS_TAKEN) {
         if ($mission->takenByUser->id > 0) {
             $save = false;
         } else {
             $mission->takenByUser = Yii::app()->user->userModel;
         }
     }
     if ($save) {
         $mission->status = $status;
         $saved = $mission->save();
         if (!$saved) {
             throw new NotSupportedException();
         }
         $statusText = MissionStatusElement::renderStatusTextContent($mission);
         $statusAction = MissionStatusElement::renderStatusActionContent($mission, MissionStatusElement::getStatusChangeDivId($mission->id));
         $content .= $statusText;
         if ($statusAction != null) {
             $content .= ' ' . $statusAction;
         }
     } else {
         $content .= '<div>' . Zurmo::t('MissionsModule', 'This mission is already taken') . '</div>';
     }
     $content = ZurmoHtml::tag('div', array('id' => MissionStatusElement::getStatusChangeDivId($mission->id), 'class' => 'missionStatusChangeArea'), $content);
     Yii::app()->getClientScript()->setToAjaxMode();
     Yii::app()->getClientScript()->render($content);
     echo $content;
 }