protected function HelpTopicPluginManager::findDefinitions in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/help_topics/src/HelpTopicPluginManager.php \Drupal\help_topics\HelpTopicPluginManager::findDefinitions()

Finds plugin definitions.

Return value

array List of definitions to store in cache.

Overrides DefaultPluginManager::findDefinitions

File

core/modules/help_topics/src/HelpTopicPluginManager.php, line 165

Class

HelpTopicPluginManager

Provides the default help_topic manager.

Namespace

Drupal\help_topics

Code

protected function findDefinitions() {
  $definitions = parent::findDefinitions();

  // At this point the plugin list only contains valid plugins. Ensure all
  // related plugins exist and the relationship is bi-directional. This
  // ensures topics are listed on their related topics.
  foreach ($definitions as $plugin_id => $plugin_definition) {
    foreach ($plugin_definition['related'] as $key => $related_id) {

      // If the related help topic does not exist it might be for a module
      // that is not installed. Remove it.
      // @todo Discuss this more as this could cause silent errors but it
      //   offers useful functionality to relate to help topic provided by
      //   extensions that are yet to be installed.
      if (!isset($definitions[$related_id])) {
        unset($definitions[$plugin_id]['related'][$key]);
        continue;
      }

      // Make the related relationship bi-directional.
      if (isset($definitions[$related_id]) && !in_array($plugin_id, $definitions[$related_id]['related'], TRUE)) {
        $definitions[$related_id]['related'][] = $plugin_id;
      }
    }
  }
  return $definitions;
}