function hook_entity_display_build_alter

Alter the render array generated by an EntityDisplay for an entity.

Parameters

array $build: The renderable array generated by the EntityDisplay.

array $context: An associative array containing:

• entity: The entity being rendered.
• view_mode: The view mode; for example, 'full' or 'teaser'.
• display: The EntityDisplay holding the display options.

Related topics

File

core/lib/Drupal/Core/Entity/entity.api.php, line 1793

Code

function hook_entity_display_build_alter(&$build, $context) {
    // Append RDF term mappings on displayed taxonomy links.
    foreach (Element::children($build) as $field_name) {
        $element =& $build[$field_name];
        if ($element['#field_type'] == 'entity_reference' && $element['#formatter'] == 'entity_reference_label') {
            foreach ($element['#items'] as $delta => $item) {
                $term = $item->entity;
                if (!empty($term->rdf_mapping['rdftype'])) {
                    $element[$delta]['#options']['attributes']['typeof'] = $term->rdf_mapping['rdftype'];
                }
                if (!empty($term->rdf_mapping['name']['predicates'])) {
                    $element[$delta]['#options']['attributes']['property'] = $term->rdf_mapping['name']['predicates'];
                }
            }
        }
    }
}