public function RouteSubscriber::alterRoutes in Facets Pretty Paths 8

Alters existing routes for a specific collection.

Parameters

\Symfony\Component\Routing\RouteCollection $collection: The route collection for adding routes.

Overrides RouteSubscriberBase::alterRoutes

File

src/RouteSubscriber.php, line 35

Class

RouteSubscriber

Alter facet source routes, adding a parameter.

Namespace

Drupal\facets_pretty_paths

Code

public function alterRoutes(RouteCollection $collection) {
  $sources = $this->facetSourcePluginManager
    ->getDefinitions();
  foreach ($sources as $source) {
    $sourcePlugin = $this->facetSourcePluginManager
      ->createInstance($source['id']);
    $path = $sourcePlugin
      ->getPath();
    $storage = \Drupal::entityTypeManager()
      ->getStorage('facets_facet_source');
    $source_id = str_replace(':', '__', $sourcePlugin
      ->getPluginId());
    $facet_source = $storage
      ->load($source_id);
    if (!$facet_source || $facet_source
      ->getUrlProcessorName() != 'facets_pretty_paths') {

      // If no custom configuration is set for the facet source, it is not
      // using pretty_paths. If there is custom configuration, ensure the url
      // processor is pretty paths.
      continue;
    }
    try {
      $url = Url::fromUri('internal:' . $path);
      $sourceRoute = $collection
        ->get($url
        ->getRouteName());

      // Ensure this only triggers once per route.
      // See https://www.drupal.org/project/facets_pretty_paths/issues/2984105
      if ($sourceRoute && strpos($sourceRoute
        ->getPath(), '/{facets_query}') === FALSE) {
        $sourceRoute
          ->setPath($sourceRoute
          ->getPath() . '/{facets_query}');
        $sourceRoute
          ->setDefault('facets_query', '');
        $sourceRoute
          ->setRequirement('facets_query', '.*');

        // Core improperly checks for route parameters that can have a slash
        // in them, only making the route match for parameters that don't
        // have a slash.
        // Workaround that here by adding fake optional parameters to the
        // route, that'll never be filled, and won't get any value set because
        // {facets_query} will already have matched the whole path.
        // Note that until the core bug is resolved, the path maximum length
        // of 255 in the router table induces a limit to the number of facets
        // that can be triggered, which will depend on the facets source path
        // length. For a base path of "/search", 40 placeholders can be added,
        // which means 20 active filter pairs.
        // See https://www.drupal.org/project/drupal/issues/2741939
        $routePath = $sourceRoute
          ->getPath();
        for ($i = 0; strlen($routePath) < 250; $i++) {
          $sourceRoute
            ->setDefault('f' . $i, '');
          $routePath .= "/{f{$i}}";
        }
        $sourceRoute
          ->setPath($routePath);
      }
    } catch (\Exception $e) {
    }
  }
}