CampaignMonitorNodeController.php in Campaign Monitor 8
Namespace
Drupal\node\ControllerFile
modules/campaignmonitor_campaign/src/Controller/CampaignMonitorNodeController.phpView source
<?php
namespace Drupal\node\Controller;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Controller\EntityViewController;
use Drupal\Core\Entity\EntityManagerInterface;
use Drupal\Core\Render\RendererInterface;
use Drupal\Core\Session\AccountInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Defines a controller to render a single node.
*/
class CampaignMonitorNodeController extends EntityViewController {
/**
* The current user.
*
* @var \Drupal\Core\Session\AccountInterface
*/
protected $currentUser;
/**
* Creates an NodeViewController object.
*
* @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
* The entity manager.
* @param \Drupal\Core\Render\RendererInterface $renderer
* The renderer service.
* @param \Drupal\Core\Session\AccountInterface $current_user
* The current user. For backwards compatibility this is optional, however
* this will be removed before Drupal 9.0.0.
*/
public function __construct(EntityManagerInterface $entity_manager, RendererInterface $renderer, AccountInterface $current_user = NULL) {
parent::__construct($entity_manager, $renderer);
$this->currentUser = $current_user ?: \Drupal::currentUser();
}
/**
* {@inheritdoc}
*/
public static function create(ContainerInterface $container) {
return new static($container
->get('entity.manager'), $container
->get('renderer'), $container
->get('current_user'));
}
/**
* {@inheritdoc}
*/
public function view(EntityInterface $node, $view_mode = 'full', $langcode = NULL) {
$build = parent::view($node, $view_mode, $langcode);
foreach ($node
->uriRelationships() as $rel) {
$url = $node
->toUrl($rel);
// Add link relationships if the user is authenticated or if the anonymous
// user has access. Access checking must be done for anonymous users to
// avoid traffic to inaccessible pages from web crawlers. For
// authenticated users, showing the links in HTML head does not impact
// user experience or security, since the routes are access checked when
// visited and only visible via view source. This prevents doing
// potentially expensive and hard to cache access checks on every request.
// This means that the page will vary by user.permissions. We also rely on
// the access checking fallback to ensure the correct cacheability
// metadata if we have to check access.
if ($this->currentUser
->isAuthenticated() || $url
->access($this->currentUser)) {
// Set the node path as the canonical URL to prevent duplicate content.
$build['#attached']['html_head_link'][] = [
[
'rel' => $rel,
'href' => $url
->toString(),
],
TRUE,
];
}
if ($rel == 'canonical') {
// Set the non-aliased canonical path as a default shortlink.
$build['#attached']['html_head_link'][] = [
[
'rel' => 'shortlink',
'href' => $url
->setOption('alias', TRUE)
->toString(),
],
TRUE,
];
}
}
// Given this varies by $this->currentUser->isAuthenticated(), add a cache
// context based on the anonymous role.
$build['#cache']['contexts'][] = 'user.roles:anonymous';
return $build;
}
/**
* The _title_callback for the page that renders a single node.
*
* @param \Drupal\Core\Entity\EntityInterface $node
* The current node.
*
* @return string
* The page title.
*/
public function title(EntityInterface $node) {
return $this->entityManager
->getTranslationFromContext($node)
->label();
}
}
Classes
Name | Description |
---|---|
CampaignMonitorNodeController | Defines a controller to render a single node. |