public function DownloadController::save in Media Download 1.0.x

Same name and namespace in other branches

1. 1.2.x src/DownloadController.php \Drupal\media_download\DownloadController::save()
2. 1.1.x src/DownloadController.php \Drupal\media_download\DownloadController::save()

Download the primary file resource referenced by the supplied media entity.

Parameters

\Drupal\media\MediaInterface $media: The media entity for which to initiate a file download.

Return value

\Drupal\media_download\CacheableBinaryFileResponse A cacheable binary file response.

File

src/DownloadController.php, line 74

Class

DownloadController

Adds support for direct downloads of media entities.

Namespace

Drupal\media_download

Code

public function save(MediaInterface $media) {
  $cacheability = new CacheableMetadata();

  // Ensure that a file is referenced by the source field, and it exists.
  if (empty($file = $this
    ->getFile($media))) {
    throw new NotFoundHttpException("There is no file associated with the requested entity.");
  }

  // Add both the media entity and the file entity that it references as
  // cacheable dependencies for this response.
  $cacheability
    ->addCacheableDependency($file);
  $cacheability
    ->addCacheableDependency($media);

  // Create a new response object to download the requested file.
  $response = new CacheableBinaryFileResponse($file
    ->getFileUri());
  $response
    ->addCacheableDependency($cacheability);
  $response
    ->setContentDisposition('inline');

  // Clear the Cache-Control header so it can be calculated automatically.
  $response->headers
    ->set('Cache-Control', '');

  // Automatically calculate the ETag and Last-Modified headers.
  $response
    ->setAutoEtag();
  $response
    ->setAutoLastModified();
  return $response;
}