NodeViewController.php in Zircon Profile 8

Contains \Drupal\node\Controller\NodeViewController.

Namespace

Drupal\node\Controller

File

core/modules/node/src/Controller/NodeViewController.php

<?php

/**
 * @file
 * Contains \Drupal\node\Controller\NodeViewController.
 */
namespace Drupal\node\Controller;

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Controller\EntityViewController;

/**
 * Defines a controller to render a single node.
 */
class NodeViewController extends EntityViewController {

  /**
   * {@inheritdoc}
   */
  public function view(EntityInterface $node, $view_mode = 'full', $langcode = NULL) {
    $build = parent::view($node, $view_mode, $langcode);
    foreach ($node
      ->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' => $node
            ->url($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' => $node
              ->url($rel, array(
              'alias' => TRUE,
            )),
          ),
          TRUE,
        );
      }
    }
    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
NodeViewController	Defines a controller to render a single node.