public function deleteAction()
 {
     $itemId = $this->getRequest()->getParam('id');
     if ($itemId !== 'all') {
         return parent::deleteAction();
     }
     $dumpItem = new $this->_modelClass();
     $this->_helper->allowed('list', $dumpItem);
     $filterList = $this->_service->buildFilterList(array('tags' => 'context_' . \App::getUserLogged()->organizationId));
     $this->_service->deleteAll($filterList);
     $this->view->data = true;
 }