MainController.php in View Mode Page 8.3

Namespace

Drupal\view_mode_page\Controller

File

src/Controller/MainController.php

<?php

namespace Drupal\view_mode_page\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Routing\AccessAwareRouterInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\HttpKernelInterface;

/**
 * Class MainController.
 *
 * @package Drupal\view_mode_page\Controller
 */
class MainController extends ControllerBase {

  /**
   * The request stack.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;

  /**
   * The http kernel interface.
   *
   * @var \Symfony\Component\HttpKernel\HttpKernelInterface
   */
  protected $httpKernel;

  /**
   * The access aware router interface.
   *
   * @var \Drupal\Core\Routing\AccessAwareRouterInterface
   */
  protected $router;

  /**
   * MainController constructor.
   *
   * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
   *   The request stack.
   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel
   *   The http kernel interface.
   * @param \Drupal\Core\Routing\AccessAwareRouterInterface $router
   *   The access aware router interface.
   */
  public function __construct(RequestStack $request_stack, HttpKernelInterface $http_kernel, AccessAwareRouterInterface $router) {
    $this->requestStack = $request_stack;
    $this->httpKernel = $http_kernel;
    $this->router = $router;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('request_stack'), $container
      ->get('http_kernel'), $container
      ->get('router'));
  }

  /**
   * Display a entity in a given view mode.
   *
   * @param string $view_mode
   *   The view mode.
   * @param string $entity_type
   *   The entity type.
   * @param mixed $entity_id
   *   The entity id.
   *
   * @return \Symfony\Component\HttpFoundation\Response
   *   The Symfony response.
   */
  public function displayEntity($view_mode, $entity_type, $entity_id) {
    $entity = $this
      ->entityTypeManager()
      ->getStorage($entity_type)
      ->load($entity_id);
    $entity_url = $entity
      ->toUrl();

    // Response method as used in
    // core/lib/Drupal/Core/EventSubscriber/DefaultExceptionHtmlSubscriber.php:122
    // but with access aware router.
    $request = $this->requestStack
      ->getCurrentRequest();
    $sub_request = clone $request;
    $sub_request->attributes
      ->add($this->router
      ->match('/' . $entity_url
      ->getInternalPath()));
    $sub_request->attributes
      ->add([
      'view_mode' => $view_mode,
    ]);
    $response = $this->httpKernel
      ->handle($sub_request, HttpKernelInterface::SUB_REQUEST);
    return $response;
  }

}

Classes

Name	Description
MainController	Class MainController.