public function OnlyOneController::addPage in Allow a content type only once (Only One) 8

Displays add content links for Only One available content types.

Return value

array|\Symfony\Component\HttpFoundation\RedirectResponse A render array for a list of the node types that can be added or redirect to the creation node page if there is only one content type.

Throws

\Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException

\Drupal\Component\Plugin\Exception\PluginNotFoundException

File

src/Controller/OnlyOneController.php, line 51

Class

OnlyOneController

Returns responses for Node routes managed by Only One.

Namespace

Drupal\onlyone\Controller

Code

public function addPage() {

  // Getting the configured content types.
  $onlyone_content_types = $this
    ->config('onlyone.settings')
    ->get('onlyone_node_types');

  // Leaving this code here until this issue will be resolved:
  // https://www.drupal.org/project/drupal/issues/2965718
  // @see https://www.drupal.org/project/onlyone/issues/3029598
  // Returning a message if the page is empty.
  if (empty($onlyone_content_types)) {
    return [
      '#markup' => '<p>' . $this
        ->t('You have not configured any content type yet, go to the <a href=":config-content-types">Only One page</a> to configure the content types.', [
        ':config-content-types' => Url::fromRoute('onlyone.config_content_types')
          ->toString(),
      ]) . '</p>',
    ];
  }
  $build = [
    '#theme' => 'node_add_list',
    '#cache' => [
      'tags' => [
        'config:onlyone.settings',
      ],
    ],
  ];
  $content = [];

  // Getting configured content types entities.
  $onlyone_content_types_node_types = $this
    ->entityTypeManager()
    ->getStorage('node_type')
    ->loadMultiple($onlyone_content_types);

  // Sorting by content type name (label).
  usort($onlyone_content_types_node_types, function ($a, $b) {
    return $a
      ->label() <=> $b
      ->label();
  });

  // Only use node types the user has access to.
  foreach ($onlyone_content_types_node_types as $type) {

    // Verifying access.
    $access = $this
      ->entityTypeManager()
      ->getAccessControlHandler('node')
      ->createAccess($type
      ->id(), NULL, [], TRUE);

    // If the user have access add the content type to the page.
    if ($access
      ->isAllowed()) {
      $content[$type
        ->id()] = $type;
    }
    $this->renderer
      ->addCacheableDependency($build, $access);
  }

  // Bypass the node/add listing if only one content type is available.
  if (count($content) == 1) {
    $type = array_shift($content);
    return $this
      ->redirect('node.add', [
      'node_type' => $type
        ->id(),
    ]);
  }
  $build['#content'] = $content;
  return $build;
}