public function DynamicEntityReferenceFormatterTrait::prepareView in Dynamic Entity Reference 8

Same name and namespace in other branches

1. 8.2 src/Plugin/Field/FieldFormatter/DynamicEntityReferenceFormatterTrait.php \Drupal\dynamic_entity_reference\Plugin\Field\FieldFormatter\DynamicEntityReferenceFormatterTrait::prepareView()

Overrides EntityReferenceFormatterBase::prepareView().

Loads the entities referenced in that field across all the entities being viewed.

Parameters

\Drupal\dynamic_entity_reference\Plugin\Field\FieldType\DynamicEntityReferenceFieldItemList[] $entities_items: Array of field values, keyed by entity ID.

File

src/Plugin/Field/FieldFormatter/DynamicEntityReferenceFormatterTrait.php, line 19

Class

DynamicEntityReferenceFormatterTrait

Trait to override EntityReferenceFormatterBase::prepareView().

Namespace

Drupal\dynamic_entity_reference\Plugin\Field\FieldFormatter

Code

public function prepareView(array $entities_items) {

  // Load the existing (non-autocreate) entities. For performance, we want to
  // use a single "multiple entity load" to load all the entities for the
  // multiple "entity reference item lists" that are being displayed. We thus
  // cannot use
  // \Drupal\dynamic_entity_reference\Plugin\Field\FieldType\DynamicEntityReferenceFieldItemList::referencedEntities().
  $ids = [];
  foreach ($entities_items as $items) {

    /** @var \Drupal\dynamic_entity_reference\Plugin\Field\FieldType\DynamicEntityReferenceItem $item */
    foreach ($items as $item) {

      // To avoid trying to reload non-existent entities in
      // getEntitiesToView(), explicitly mark the items where $item->entity
      // contains a valid entity ready for display. All items are initialized
      // at FALSE.
      $item->_loaded = FALSE;
      if (!$item
        ->hasNewEntity()) {
        $ids[$item->target_type][] = $item->target_id;
      }
    }
  }
  if ($ids) {
    foreach (array_keys($ids) as $target_type) {
      $target_entities[$target_type] = \Drupal::entityTypeManager()
        ->getStorage($target_type)
        ->loadMultiple($ids[$target_type]);
    }
  }

  // For each item, pre-populate the loaded entity in $item->entity, and set
  // the 'loaded' flag.
  foreach ($entities_items as $items) {
    foreach ($items as $item) {
      if (isset($target_entities[$item->target_type]) && isset($target_entities[$item->target_type][$item->target_id])) {
        $item->entity = $target_entities[$item->target_type][$item->target_id];
        $item->_loaded = TRUE;
      }
      elseif ($item
        ->hasNewEntity()) {
        $item->_loaded = TRUE;
      }
    }
  }
}