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function rdf_preprocess_image in Drupal 9

Same name and namespace in other branches
  1. 8 core/modules/rdf/rdf.module \rdf_preprocess_image()
  2. 7 modules/rdf/rdf.module \rdf_preprocess_image()

Implements hook_preprocess_HOOK() for image.html.twig.

File

core/modules/rdf/rdf.module, line 591
Enables semantically enriched output for Drupal sites in the form of RDFa.

Code

function rdf_preprocess_image(&$variables) {

  // Adds the RDF type for image.  We cannot use the usual entity-based mapping
  // to get 'foaf:Image' because image does not have its own entity type or
  // bundle.
  $variables['attributes']['typeof'] = [
    'foaf:Image',
  ];
}