function template_preprocess_commerce_file_download_link in Commerce File 8.2

Prepares variables for file download link templates.

Copied from template_preprocess_file_link.

Default template: commerce-file-download-link.html.twig.

Parameters

array $variables: An associative array containing:

• file: A File entity to which the link will be created.
• icon_directory: (optional) A path to a directory of icons to be used for files. Defaults to the value of the "icon.directory" variable.
• description: A description to be displayed instead of the filename.
• attributes: An associative array of attributes to be placed in the a tag.

File

./commerce_file.module, line 218

Extends Commerce License with the ability to sell access to files.

Code

function template_preprocess_commerce_file_download_link(array &$variables) {

  /** @var \Drupal\file\FileInterface $file */
  $file = $variables['file'];
  $options = [];

  // @todo Wrap in file_url_transform_relative(). This is currently
  // impossible. As a work-around, we currently add the 'url.site' cache context
  // to ensure different file URLs are generated for different sites in a
  // multisite setup, including HTTP and HTTPS versions of the same site.
  // Fix in https://www.drupal.org/node/2646744.
  $variables['#cache']['contexts'][] = 'url.site';
  $mime_type = $file
    ->getMimeType();

  // Set options as per anchor format described at
  // http://microformats.org/wiki/file-format-examples
  $options['attributes']['type'] = $mime_type . '; length=' . $file
    ->getSize();

  // Use the description as the link text if available.
  if (empty($variables['description'])) {
    $link_text = $file
      ->getFilename();
  }
  else {
    $link_text = $variables['description'];
    $options['attributes']['title'] = $file
      ->getFilename();
  }

  // Classes to add to the file field for icons.
  $classes = [
    'file',
    // Add a specific class for each and every mime type.
    'file--mime-' . strtr($mime_type, [
      '/' => '-',
      '.' => '-',
    ]),
    // Add a more general class for groups of well known MIME types.
    'file--' . file_icon_class($mime_type),
  ];

  // Set file classes to the options array.
  $variables['attributes'] = new Attribute($variables['attributes']);
  $variables['attributes']
    ->addClass($classes);
  $variables['file_size'] = format_size($file
    ->getSize());
  $route_parameters = [
    'file' => $file
      ->id(),
  ];
  $variables['link'] = Link::fromTextAndUrl($link_text, Url::fromRoute('commerce_file.download', $route_parameters, $options))
    ->toRenderable();
}