I'm trying to display the format and size of a file attached to an article. Its system name is field_file.

So far, I've succeeded to load an article in my my_theme.theme file and the field_file field attached to it:

$article = Node::load($article_nid); $variables['file'] = $article->get('field_file');

then use its uri in a twig file: {{file_url(file.entity.fileuri)}}

Now I'm trying to display its format and size. I tried {{file.entity.format}} and {{file.entity.filesize}} without success.

Does anyone have a clue how to do it? I'm still new to Drupal plugins and entities.

1 Answer 1


Try getSize and getMimeType in your my_theme.theme as in the example below

function my_theme_preprocess_node(&$vars) {
  $node = $vars['node'];
  $type = $node->getType();
  if( $type == "article" && $node->hasField('field_file')){
      //next gets FieldItemList
      //$file = $node->get('field_file');  

      //you need get the file entity
      $file = $node->get('field_file')->entity;
      $vars["size"] = $file->getSize();
      $vars["type"] = $file->getMimeType();     
  • Thanks for your answer, I already tried the first method, but since my field is a FieldItemList field and not a type File field (no idea why), it doesn't work
    – Améziane
    Feb 18, 2018 at 21:00
  • $node->get('field_file')->entity will give you the entity, look at example above
    – GiorgosK
    Feb 19, 2018 at 6:48
  • Do you then display the file type of field 'field_file' using this in the twig file: {{type}} Nov 3, 2019 at 13:14

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