static function dropzoneUpload ($request, $response)
  {
    $ds = DIRECTORY_SEPARATOR;
    $storeFolder = self::TEMP_STORE_FOLDER_NAME;
    $storePath = sys_get_temp_dir().$ds.$storeFolder;

    if (!is_dir($storePath))
      mkdir($storePath);

    $file = "";
    foreach ($request->getUploadedFiles() as $oFile)
    {
      $filename = $oFile->getClientFilename ();
      $filePath = $storePath.$ds.$filename;
      $oFile->moveTo($filePath);
      $file = $filePath;
    }
    return Http::jsonResponse ($response,$file);
  }