public function sort_orderAction()
 {
     $this->setInvokeArg('noViewRenderer', true);
     $sort_order_data = $this->getRequest()->getPost('sort_order');
     foreach ($sort_order_data as $sort_order => $place_id) {
         if ($place_id) {
             Model_Categories::changeSortOrder($place_id, $sort_order);
         }
     }
     echo 1;
 }