public function saveCSVData($csv_data)
 {
     if (!DpdPolandCSV::deleteAllData()) {
         return false;
     }
     $success = true;
     foreach ($csv_data as $data) {
         $csv_obj = new DpdPolandCSV();
         $csv_obj->id_shop = (int) $this->context->shop->id;
         $csv_obj->iso_country = $data[DpdPolandCSV::COLUMN_COUNTRY];
         $csv_obj->weight_from = $data[DpdPolandCSV::COLUMN_WEIGHT_FROM];
         $csv_obj->weight_to = $data[DpdPolandCSV::COLUMN_WEIGHT_TO];
         $csv_obj->parcel_price = $data[DpdPolandCSV::COLUMN_PARCEL_PRICE];
         $csv_obj->id_carrier = $data[DpdPolandCSV::COLUMN_CARRIER];
         $csv_obj->cod_price = $data[DpdPolandCSV::COLUMN_COD_PRICE];
         $success &= $csv_obj->save();
     }
     return $success;
 }