public function FeedViewBuilder::buildComponents in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/aggregator/src/FeedViewBuilder.php \Drupal\aggregator\FeedViewBuilder::buildComponents()

Builds the component fields and properties of a set of entities.

Parameters

&$build: The renderable array representing the entity content.

\Drupal\Core\Entity\EntityInterface[] $entities: The entities whose content is being built.

\Drupal\Core\Entity\Display\EntityViewDisplayInterface[] $displays: The array of entity view displays holding the display options configured for the entity components, keyed by bundle name.

string $view_mode: The view mode in which the entity is being viewed.

Overrides EntityViewBuilder::buildComponents

File

core/modules/aggregator/src/FeedViewBuilder.php, line 77

Class

FeedViewBuilder

View builder handler for aggregator feeds.

Namespace

Drupal\aggregator

Code

public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
  parent::buildComponents($build, $entities, $displays, $view_mode);
  foreach ($entities as $id => $entity) {
    $bundle = $entity
      ->bundle();
    $display = $displays[$bundle];
    if ($display
      ->getComponent('items')) {

      // When in summary view mode, respect the list_max setting.
      $limit = $view_mode == 'summary' ? $this->config
        ->get('source.list_max') : 20;

      // Retrieve the items attached to this feed.
      $items = $this->entityTypeManager
        ->getStorage('aggregator_item')
        ->loadByFeed($entity
        ->id(), $limit);
      $build[$id]['items'] = $this->entityTypeManager
        ->getViewBuilder('aggregator_item')
        ->viewMultiple($items, $view_mode, $entity
        ->language()
        ->getId());
      if ($view_mode == 'full') {

        // Also add the pager.
        $build[$id]['pager'] = [
          '#type' => 'pager',
        ];
      }
    }

    // By default, the description and image fields are exposed as
    // pseudo-fields rendered in this function. However they can optionally
    // be rendered directly using a field formatter. Skip rendering here if a
    // field formatter type is set.
    $component = $display
      ->getComponent('description');
    if ($component && !isset($component['type'])) {
      $build[$id]['description'] = [
        '#markup' => $entity
          ->getDescription(),
        '#allowed_tags' => _aggregator_allowed_tags(),
        '#prefix' => '<div class="feed-description">',
        '#suffix' => '</div>',
      ];
    }
    $component = $display
      ->getComponent('image');
    if ($component && !isset($component['type'])) {
      $image_link = [];

      // Render the image as link if it is available.
      $image = $entity
        ->getImage();
      $label = $entity
        ->label();
      $link_href = $entity
        ->getWebsiteUrl();
      if ($image && $label && $link_href) {
        $link_title = [
          '#theme' => 'image',
          '#uri' => $image,
          '#alt' => $label,
        ];
        $image_link = [
          '#type' => 'link',
          '#title' => $link_title,
          '#url' => Url::fromUri($link_href),
          '#options' => [
            'attributes' => [
              'class' => [
                'feed-image',
              ],
            ],
          ],
        ];
      }
      $build[$id]['image'] = $image_link;
    }
    if ($display
      ->getComponent('feed_icon')) {
      $build[$id]['feed_icon'] = [
        '#theme' => 'feed_icon',
        '#url' => $entity
          ->getUrl(),
        '#title' => t('@title feed', [
          '@title' => $entity
            ->label(),
        ]),
      ];
    }
    if ($display
      ->getComponent('more_link')) {
      $title_stripped = strip_tags($entity
        ->label());
      $build[$id]['more_link'] = [
        '#type' => 'link',
        '#title' => t('More<span class="visually-hidden"> posts about @title</span>', [
          '@title' => $title_stripped,
        ]),
        '#url' => Url::fromRoute('entity.aggregator_feed.canonical', [
          'aggregator_feed' => $entity
            ->id(),
        ]),
        '#options' => [
          'attributes' => [
            'title' => $title_stripped,
          ],
        ],
      ];
    }
  }
}