public function update()
 {
     //init controller data
     $this->extensions->hk_InitData($this, __FUNCTION__);
     $this->loadLanguage('design/content');
     $this->acm = new AContentManager();
     if (!$this->user->canModify('listing_grid/content')) {
         $error = new AError('');
         return $error->toJSONResponse('NO_PERMISSIONS_402', array('error_text' => sprintf($this->language->get('error_permission_modify'), 'listing_grid/content'), 'reset_value' => true));
     }
     switch ($this->request->post['oper']) {
         case 'del':
             $ids = explode(',', $this->request->post['id']);
             if (!empty($ids)) {
                 foreach ($ids as $id) {
                     if (is_int(strpos($id, '_'))) {
                         list($parent_content_id, $content_id) = explode('_', $id);
                     } else {
                         $content_id = $id;
                     }
                     if ($this->config->get('config_account_id') == $content_id) {
                         $this->response->setOutput($this->language->get('error_account'));
                         return null;
                     }
                     if ($this->config->get('config_checkout_id') == $content_id) {
                         $this->response->setOutput($this->language->get('error_checkout'));
                         return null;
                     }
                     $this->acm->deleteContent($content_id);
                 }
             }
             break;
         case 'save':
             $allowedFields = array('sort_order', 'status');
             $ids = explode(',', $this->request->post['id']);
             if (!empty($ids)) {
                 //resort required.
                 if ($this->request->post['resort'] == 'yes') {
                     //get only ids we need
                     foreach ($ids as $id) {
                         $array[$id] = $this->request->post['sort_order'][$id];
                     }
                     $new_sort = build_sort_order($ids, min($array), max($array), $this->request->post['sort_direction']);
                     $this->request->post['sort_order'] = $new_sort;
                 }
             }
             foreach ($ids as $id) {
                 $parent_content_id = null;
                 if (is_int(strpos($id, '_'))) {
                     list($parent_content_id, $content_id) = explode('_', $id);
                 } else {
                     $content_id = $id;
                 }
                 foreach ($allowedFields as $field) {
                     $this->acm->editContentField($content_id, $field, $this->request->post[$field][$id], $parent_content_id);
                 }
             }
             break;
         default:
     }
     //update controller data
     $this->extensions->hk_UpdateData($this, __FUNCTION__);
 }