class BreadcrumbBuilder in Current Page Crumb 8

Adds the current page title to the breadcrumb.

Extend PathBased Breadcrumbs to include the current page title as an unlinked crumb. The module uses the path if the title is unavailable and it excludes all admin paths.

Hierarchy

• class \Drupal\system\PathBasedBreadcrumbBuilder implements BreadcrumbBuilderInterface uses StringTranslationTrait
  • class \Drupal\current_page_crumb\BreadcrumbBuilder

1 string reference to 'BreadcrumbBuilder'

current_page_crumb.services.yml in ./current_page_crumb.services.yml

current_page_crumb.services.yml

1 service uses BreadcrumbBuilder

current_page_crumb.breadcrumb in ./current_page_crumb.services.yml

Drupal\current_page_crumb\BreadcrumbBuilder

File

src/BreadcrumbBuilder.php, line 21

Namespace

Drupal\current_page_crumb

class BreadcrumbBuilder extends PathBasedBreadcrumbBuilder {

  /**
   * {@inheritdoc}
   */
  public function build(RouteMatchInterface $route_match) {
    $breadcrumbs = parent::build($route_match);
    $request = \Drupal::request();
    $path = trim($this->context
      ->getPathInfo(), '/');
    $path_elements = explode('/', $path);
    $route = $request->attributes
      ->get(RouteObjectInterface::ROUTE_OBJECT);

    // Do not adjust the breadcrumbs on admin paths and front page.
    if ($route && !$route
      ->getOption('_admin_route') && !$this->pathMatcher
      ->isFrontPage()) {
      $title = $this->titleResolver
        ->getTitle($request, $route);
      if (!isset($title)) {

        // Fallback to using the raw path component as the title if the
        // route is missing a _title or _title_callback attribute.
        $title = str_replace([
          '-',
          '_',
        ], ' ', Unicode::ucfirst(end($path_elements)));
      }
      $breadcrumbs
        ->addLink(Link::createFromRoute($title, '<none>'));
    }

    // Handle expiring views paths and any entity default page cache.
    $parameters = $route_match
      ->getParameters();
    foreach ($parameters as $key => $parameter) {
      if ($key === 'view_id') {
        $breadcrumbs
          ->addCacheTags([
          'config:views.view.' . $parameter,
        ]);
      }
      if ($parameter instanceof CacheableDependencyInterface) {
        $breadcrumbs
          ->addCacheableDependency($parameter);
      }
    }

    // Expire the cache when things need to update based on route, path and language.
    $breadcrumbs
      ->addCacheContexts([
      'route',
      'url.path',
      'languages',
    ]);
    return $breadcrumbs;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BreadcrumbBuilder::build	public	function	Builds the breadcrumb. Overrides PathBasedBreadcrumbBuilder::build
PathBasedBreadcrumbBuilder::$accessManager	protected	property	The menu link access service.
PathBasedBreadcrumbBuilder::$config	protected	property	Site config object.
PathBasedBreadcrumbBuilder::$context	protected	property	The router request context.
PathBasedBreadcrumbBuilder::$currentPath	protected	property	The current path service.
PathBasedBreadcrumbBuilder::$currentUser	protected	property	The current user object.
PathBasedBreadcrumbBuilder::$pathMatcher	protected	property	The patch matcher service.
PathBasedBreadcrumbBuilder::$pathProcessor	protected	property	The inbound path processor.
PathBasedBreadcrumbBuilder::$router	protected	property	The dynamic router service.
PathBasedBreadcrumbBuilder::$titleResolver	protected	property	The title resolver.
PathBasedBreadcrumbBuilder::applies	public	function	Whether this breadcrumb builder should be used to build the breadcrumb. Overrides BreadcrumbBuilderInterface::applies
PathBasedBreadcrumbBuilder::getRequestForPath	protected	function	Matches a path in the router.
PathBasedBreadcrumbBuilder::__construct	public	function	Constructs the PathBasedBreadcrumbBuilder.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.