public function index()
 {
     $current_series = Series::currentSeries()->first();
     $events = Event::featured()->get()->sortBy('sort');
     $icampus_times = Campus::findBySlug('online')->times;
     return view('welcome', ['current_series' => $current_series, 'events' => $events, 'icampus_times' => $icampus_times]);
 }
 private function importStaff()
 {
     $table = 'staff';
     $items = $this->getStaff();
     Staff::unguard();
     DB::table($table)->truncate();
     foreach ($items as $item) {
         $campus = Campus::findBySlug($item->campus_slug);
         $data = get_object_vars($item);
         unset($data['campus_slug']);
         $model = new Staff($data);
         $model->campus_id = is_null($campus) ? null : $campus->id;
         $model->save();
     }
 }