public function YouTubeThumbFormatter::viewElements in YouTube Field 8

Builds a renderable array for a field value.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values to be rendered.

string $langcode: The language that should be used to render the field.

Return value

array A renderable array for $items, as an array of child elements keyed by consecutive numeric indexes starting from 0.

Overrides FormatterInterface::viewElements

File

src/Plugin/Field/FieldFormatter/YouTubeThumbFormatter.php, line 87

Class

YouTubeThumbFormatter

Plugin implementation of the 'youtube_thumbnail' formatter.

Namespace

Drupal\youtube\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $element = [];
  $entity = $items
    ->getEntity();
  $image_link = $this
    ->getSetting('image_link');

  // Check if the formatter involves a link.
  if (!empty($image_link)) {
    if ($image_link == 'content' && $entity
      ->hasLinkTemplate('canonical')) {
      $url = $entity
        ->toUrl();
      $url
        ->setOption('html', TRUE);
    }
    elseif ($image_link == 'youtube') {
      $link_youtube = TRUE;
    }
  }
  foreach ($items as $delta => $item) {

    // If the thumbnail is linked to its youtube page, take the original url.
    if (isset($link_youtube) && $link_youtube) {
      $url = Url::fromUri($item->input);
      $url
        ->setOption('html', TRUE);
    }
    $element[$delta] = [
      '#theme' => 'youtube_thumbnail',
      '#video_id' => $item->video_id,
      '#entity_title' => $items
        ->getEntity()
        ->label(),
      '#image_style' => $this
        ->getSetting('image_style'),
      '#image_link' => isset($url) ? $url : '',
    ];
  }
  return $element;
}