/**
  * Lists all Vacancy models.
  * @return mixed
  */
 public function actionIndex()
 {
     //        $searchModel = new VacancySearch();
     //        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
     $filterModel = new VacancyFilter();
     $filterModel->load(Yii::$app->request->post(), 'VacancyFilter');
     $dataProvider = $filterModel->dataProvider();
     return $this->render('index', ['filterModel' => $filterModel, 'dataProvider' => $dataProvider]);
 }