public function listSiteStatsAction()
 {
     $params = json_decode(file_get_contents('php://input'));
     //$list = SiteStats::find("site_id = $params->site_id");
     $list = SiteStats::query()->where("site_id = {$params->site_id}");
     if ($params->from_time > 0) {
         $list->andWhere("time >= {$params->from_time}");
     }
     if ($params->to_time > 0) {
         $list->andWhere("time <= {$params->to_time}");
     }
     $list = $list->execute();
     $this->view->disable();
     echo json_encode(array("data" => $list->toArray()));
 }