public function EntityReferenceFormatterBase::prepareView

Overrides \Drupal\field\Plugin\Type\Formatter\FormatterBase::prepareView().

Mark the accessible IDs a user can see. We do not unset unaccessible values, as other may want to act on those values, even if they can not be accessed.

Overrides FormatterBase::prepareView

File

drupal/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceFormatterBase.php, line 27

Contains \Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase.

Class

EntityReferenceFormatterBase

Parent plugin for entity reference formatters.

Namespace

Code

public function prepareView(array $entities, $langcode, array &$items) {
  $target_ids = array();
  $revision_ids = array();

  // Collect every possible entity attached to any of the entities.
  foreach ($entities as $id => $entity) {
    foreach ($items[$id] as $delta => $item) {
      if (!empty($item['revision_id'])) {
        $revision_ids[] = $item['revision_id'];
      }
      elseif (!empty($item['target_id'])) {
        $target_ids[] = $item['target_id'];
      }
    }
  }
  $target_type = $this->field['settings']['target_type'];
  $target_entities = array();
  if ($target_ids) {
    $target_entities = entity_load_multiple($target_type, $target_ids);
  }
  if ($revision_ids) {

    // We need to load the revisions one by-one.
    foreach ($revision_ids as $revision_id) {
      $entity = entity_revision_load($target_type, $revision_id);

      // Use the revision ID in the key.
      $identifier = $entity
        ->id() . ':' . $revision_id;
      $target_entities[$identifier] = $entity;
    }
  }

  // Iterate through the fieldable entities again to attach the loaded data.
  foreach ($entities as $id => $entity) {
    $rekey = FALSE;
    foreach ($items[$id] as $delta => $item) {

      // If we have a revision ID, the key uses it as well.
      $identifier = !empty($item['revision_id']) ? $item['target_id'] . ':' . $item['revision_id'] : $item['target_id'];
      if ($item['target_id'] !== 0) {
        if (!isset($target_entities[$identifier])) {

          // The entity no longer exists, so remove the key.
          $rekey = TRUE;
          unset($items[$id][$delta]);
          continue;
        }
        $entity = $target_entities[$identifier];
        $items[$id][$delta]['entity'] = $entity;
        if (!$entity
          ->access('view')) {
          continue;
        }
      }
      else {

        // This is an "auto_create" item, just leave the entity in place.
      }

      // Mark item as accessible.
      $items[$id][$delta]['access'] = TRUE;
    }
    if ($rekey) {

      // Rekey the items array.
      $items[$id] = array_values($items[$id]);
    }
  }
}