public function orderConversationsAction()
 {
     $sn = strtoupper(trim($this->_getParam('sn')));
     $lastId = intval(trim($this->_getParam('lastId')));
     $ofd = new Model_OrderForDriver($sn);
     if (!$ofd->exists() || $ofd->get('driver_code') != $this->code) {
         $this->sendResult(array());
         return;
     }
     $this->sendResult(parent::orderConversations($sn, $lastId));
 }
 public function orderConversationsAction()
 {
     $lastId = intval(trim($this->_getParam('lastId')));
     $this->sendResult(parent::orderConversations($this->sn, $lastId));
 }