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class HelpTopicPluginController in Drupal 8

Same name and namespace in other branches
  1. 9 core/modules/help_topics/src/Controller/HelpTopicPluginController.php \Drupal\help_topics\Controller\HelpTopicPluginController
  2. 10 core/modules/help_topics/src/Controller/HelpTopicPluginController.php \Drupal\help_topics\Controller\HelpTopicPluginController

Controller for help topic plugins.

@internal Help Topic is currently experimental and should only be leveraged by experimental modules and development releases of contributed modules. See https://www.drupal.org/core/experimental for more information.

Hierarchy

Expanded class hierarchy of HelpTopicPluginController

File

core/modules/help_topics/src/Controller/HelpTopicPluginController.php, line 21

Namespace

Drupal\help_topics\Controller
View source
class HelpTopicPluginController extends ControllerBase {

  /**
   * The renderer service.
   *
   * @var \Drupal\Core\Render\RendererInterface
   */
  protected $renderer;

  /**
   * The Help Topic plugin manager.
   *
   * @var \Drupal\help_topics\HelpTopicPluginManagerInterface
   */
  protected $helpTopicPluginManager;

  /**
   * Constructs a HelpTopicPluginController object.
   *
   * @param \Drupal\help_topics\HelpTopicPluginManagerInterface $help_topic_plugin_manager
   *   The help topic plugin manager service.
   * @param \Drupal\Core\Render\RendererInterface $renderer
   *   The renderer service.
   */
  public function __construct(HelpTopicPluginManagerInterface $help_topic_plugin_manager, RendererInterface $renderer) {
    $this->helpTopicPluginManager = $help_topic_plugin_manager;
    $this->renderer = $renderer;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('plugin.manager.help_topic'), $container
      ->get('renderer'));
  }

  /**
   * Displays a help topic page.
   *
   * @param string $id
   *   The plugin ID. Maps to the {id} placeholder in the
   *   help.help_topic route.
   *
   * @return array
   *   A render array with the contents of a help topic page.
   */
  public function viewHelpTopic($id) {
    $build = [];
    if (!$this->helpTopicPluginManager
      ->hasDefinition($id)) {
      throw new NotFoundHttpException();
    }

    /* @var \Drupal\help_topics\HelpTopicPluginInterface $help_topic */
    $help_topic = $this->helpTopicPluginManager
      ->createInstance($id);
    $build['#body'] = $help_topic
      ->getBody();
    $this->renderer
      ->addCacheableDependency($build, $help_topic);

    // Build the related topics section, starting with the list this topic
    // says are related.
    $links = [];
    $related = $help_topic
      ->getRelated();
    foreach ($related as $other_id) {
      if ($other_id !== $id) {

        /** @var \Drupal\help_topics\HelpTopicPluginInterface $topic */
        $topic = $this->helpTopicPluginManager
          ->createInstance($other_id);
        $links[$other_id] = [
          'title' => $topic
            ->getLabel(),
          'url' => Url::fromRoute('help.help_topic', [
            'id' => $other_id,
          ]),
        ];
        $this->renderer
          ->addCacheableDependency($build, $topic);
      }
    }
    if (count($links)) {
      uasort($links, [
        SortArray::class,
        'sortByTitleElement',
      ]);
      $build['#related'] = [
        '#theme' => 'links__related',
        '#heading' => [
          'text' => $this
            ->t('Related topics'),
          'level' => 'h2',
        ],
        '#links' => $links,
      ];
    }
    $build['#theme'] = 'help_topic';
    $build['#title'] = $help_topic
      ->getLabel();
    return $build;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
ControllerBase::$configFactory protected property The configuration factory.
ControllerBase::$currentUser protected property The current user service. 1
ControllerBase::$entityFormBuilder protected property The entity form builder.
ControllerBase::$entityManager protected property The entity manager.
ControllerBase::$entityTypeManager protected property The entity type manager.
ControllerBase::$formBuilder protected property The form builder. 2
ControllerBase::$keyValue protected property The key-value storage. 1
ControllerBase::$languageManager protected property The language manager. 1
ControllerBase::$moduleHandler protected property The module handler. 2
ControllerBase::$stateService protected property The state service.
ControllerBase::cache protected function Returns the requested cache bin.
ControllerBase::config protected function Retrieves a configuration object.
ControllerBase::container private function Returns the service container.
ControllerBase::currentUser protected function Returns the current user. 1
ControllerBase::entityFormBuilder protected function Retrieves the entity form builder.
ControllerBase::entityManager Deprecated protected function Retrieves the entity manager service.
ControllerBase::entityTypeManager protected function Retrieves the entity type manager.
ControllerBase::formBuilder protected function Returns the form builder service. 2
ControllerBase::keyValue protected function Returns a key/value storage collection. 1
ControllerBase::languageManager protected function Returns the language manager service. 1
ControllerBase::moduleHandler protected function Returns the module handler. 2
ControllerBase::redirect protected function Returns a redirect response object for the specified route. Overrides UrlGeneratorTrait::redirect
ControllerBase::state protected function Returns the state storage service.
HelpTopicPluginController::$helpTopicPluginManager protected property The Help Topic plugin manager.
HelpTopicPluginController::$renderer protected property The renderer service.
HelpTopicPluginController::create public static function Instantiates a new instance of this class. Overrides ControllerBase::create
HelpTopicPluginController::viewHelpTopic public function Displays a help topic page.
HelpTopicPluginController::__construct public function Constructs a HelpTopicPluginController object.
LinkGeneratorTrait::$linkGenerator protected property The link generator. 1
LinkGeneratorTrait::getLinkGenerator Deprecated protected function Returns the link generator.
LinkGeneratorTrait::l Deprecated protected function Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator Deprecated public function Sets the link generator service.
LoggerChannelTrait::$loggerFactory protected property The logger channel factory service.
LoggerChannelTrait::getLogger protected function Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory public function Injects the logger channel factory.
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
RedirectDestinationTrait::$redirectDestination protected property The redirect destination service. 1
RedirectDestinationTrait::getDestinationArray protected function Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination protected function Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination public function Sets the redirect destination service.
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
UrlGeneratorTrait::$urlGenerator protected property The url generator.
UrlGeneratorTrait::getUrlGenerator Deprecated protected function Returns the URL generator service.
UrlGeneratorTrait::setUrlGenerator Deprecated public function Sets the URL generator service.
UrlGeneratorTrait::url Deprecated protected function Generates a URL or path for a specific route based on the given parameters.