public function FieldCollectionListFormatter::viewElements in Field collection 8.3

Same name and namespace in other branches

1. 8 src/Plugin/Field/FieldFormatter/FieldCollectionListFormatter.php \Drupal\field_collection\Plugin\Field\FieldFormatter\FieldCollectionListFormatter::viewElements()

TODO: Use $langcode.

Overrides FormatterInterface::viewElements

File

src/Plugin/Field/FieldFormatter/FieldCollectionListFormatter.php, line 27

Class

FieldCollectionListFormatter

Plugin implementation of the 'field_collection_list' formatter.

Namespace

Drupal\field_collection\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $element = [];
  $count = 0;

  // TODO: Is there a better way to get an accurate count of the
  // items from the FieldItemList that doesn't count blank items?
  // Possibly \Countable->count()?
  $storage = \Drupal::entityTypeManager()
    ->getStorage('field_collection_item');
  foreach ($items as $delta => $item) {
    if ($item->target_id !== NULL) {
      $count++;
      $field_collection_item = $storage
        ->loadRevision($item->revision_id);
      if ($field_collection_item
        ->isDefaultRevision()) {
        $links = Link::fromTextAndUrl($this->fieldDefinition
          ->getName() . ' ' . $delta, Url::FromRoute('entity.field_collection_item.canonical', [
          'field_collection_item' => $item->target_id,
        ]))
          ->toString();
        $links .= ' ' . $this
          ->getEditLinks($item);
      }
      else {
        $links = Link::fromTextAndUrl($this->fieldDefinition
          ->getName() . ' ' . $delta, Url::FromRoute('field_collection_item.revision_show', [
          'field_collection_item' => $item->target_id,
          'field_collection_item_revision' => $item->revision_id,
        ]))
          ->toString();
      }
      $element[$delta] = [
        '#markup' => $links,
      ];
    }
  }
  $cardinality = $this->fieldDefinition
    ->getFieldStorageDefinition()
    ->getCardinality();
  $entity = $items
    ->getEntity();
  if ($entity
    ->id() && ($cardinality == -1 || $count < $cardinality)) {
    $element['#suffix'] = '<ul class="action-links action-links-field-collection-add"><li>';
    $element['#suffix'] .= $this
      ->getAddLink($entity);
    $element['#suffix'] .= '</li></ul>';
  }
  return $element;
}