public function actionPart_time_select()
 {
     $start_time = strtotime(Yii::$app->request->post("start_time"));
     $end_time = strtotime(Yii::$app->request->post("end_time"));
     $session = \Yii::$app->session;
     $session->open();
     if (!isset($_GET['page'])) {
         $session->set('start_time', $start_time);
         $session->set('end_time', $end_time);
     }
     $start_time = $session->get('start_time');
     $end_time = $session->get('end_time');
     $model = new Partjob();
     $part_list = $model->job_time($start_time, $end_time);
     return $this->renderpartial('part_time_select', $part_list);
 }