public function actionIndex()
 {
     $userCount = Users::getAllCount();
     $oneNewsPic = News::getOnePicIndexNewsByCategory(2);
     $newsA = News::getIndexNewsByCategory(2, 6);
     $newsB = News::getIndexNewsByCategory(5, 12);
     $newsC = News::getIndexNewsByCategory(7, 5);
     $newsF = News::getOnePicIndexNewsByCategory(2);
     $newsRegister = TrainUsers::getAllByCount(5);
     $newContent = Pages::findOne(9);
     if (!empty($newsRegister)) {
         foreach ($newsRegister as $key => $val) {
             $newsD[$key]['title'] = Users::getOneUserNameById($val['user_id']) . "报名" . Train::getOneTrainNameById($val['train_id']) . "已被录取";
             $newsD[$key]['create_time'] = $val['create_time'];
             $newsD[$key]['user_id'] = $val['user_id'];
         }
     }
     $newsE = News::getIndexNewsByCategory(6, 5);
     $data = ['userCount' => $userCount, 'oneNewsPic' => $oneNewsPic, 'newsA' => $newsA, 'newsB' => $newsB, 'newsC' => $newsC, 'newsD' => $newsD, 'newsE' => $newsE, 'newsF' => $newsF, 'newsRegister' => $newContent];
     return $this->render('index', ['data' => $data]);
 }