public function NodePreviewController::view in Zircon Profile 8
Same name and namespace in other branches
- 8.0 core/modules/node/src/Controller/NodePreviewController.php \Drupal\node\Controller\NodePreviewController::view()
Provides a page to render a single entity.
Parameters
\Drupal\Core\Entity\EntityInterface $_entity: The Entity to be rendered. Note this variable is named $_entity rather than $entity to prevent collisions with other named placeholders in the route.
string $view_mode: (optional) The view mode that should be used to display the entity. Defaults to 'full'.
Return value
array A render array as expected by drupal_render().
Overrides EntityViewController::view
1 string reference to 'NodePreviewController::view'
- node.routing.yml in core/
modules/ node/ node.routing.yml - core/modules/node/node.routing.yml
File
- core/
modules/ node/ src/ Controller/ NodePreviewController.php, line 21 - Contains \Drupal\node\Controller\NodePreviewController.
Class
- NodePreviewController
- Defines a controller to render a single node in preview.
Namespace
Drupal\node\ControllerCode
public function view(EntityInterface $node_preview, $view_mode_id = 'full', $langcode = NULL) {
$node_preview->preview_view_mode = $view_mode_id;
$build = parent::view($node_preview, $view_mode_id);
$build['#attached']['library'][] = 'node/drupal.node.preview';
// Don't render cache previews.
unset($build['#cache']);
foreach ($node_preview
->uriRelationships() as $rel) {
// Set the node path as the canonical URL to prevent duplicate content.
$build['#attached']['html_head_link'][] = array(
array(
'rel' => $rel,
'href' => $node_preview
->url($rel),
),
TRUE,
);
if ($rel == 'canonical') {
// Set the non-aliased canonical path as a default shortlink.
$build['#attached']['html_head_link'][] = array(
array(
'rel' => 'shortlink',
'href' => $node_preview
->url($rel, array(
'alias' => TRUE,
)),
),
TRUE,
);
}
}
return $build;
}