public function getIndex()
 {
     $purchases_ids_arr = \App\Helpers\OrdersHelper::getPurchasesIdsArrByUserId($this->user->id);
     /**
      * TODO: заменить на \App\Helpers\OrdersHelper::getOrdersCollectionsByPurchaseIdAndByUserId
      */
     $orders_models_arr_by_purchases_ids_arr = \App\Helpers\OrdersHelper::getOrdersModelsArrByPurchasesIdsArrAndByUserId($this->user->id, $purchases_ids_arr);
     return view('orders.index', ['purchases_ids_arr' => $purchases_ids_arr, 'orders_models_arr_by_purchases_ids_arr' => $orders_models_arr_by_purchases_ids_arr]);
 }