/**
* Returns the referenced entities for display.
*
* The method takes care of:
* - checking entity access,
* - placing the entities in the language expected for display.
* It is thus strongly recommended that formatters use it in their
* implementation of viewElements($items) rather than dealing with $items
* directly.
*
* For each entity, the EntityReferenceItem by which the entity is referenced
* is available in $entity->_referringItem. This is useful for field types
* that store additional values next to the reference itself.
*
* @param \Drupal\Core\Field\EntityReferenceFieldItemListInterface $items
* The item list.
*
* @return \Drupal\Core\Entity\EntityInterface[]
* The array of referenced entities to display, keyed by delta.
*/
protected function getEntitiesToView(EntityReferenceFieldItemListInterface $items)
{
$entities = array();
$parent_entity_langcode = $items->getEntity()->language()->getId();
foreach ($items as $delta => $item) {
// Ignore items where no entity could be loaded in prepareView().
if (!empty($item->_loaded)) {
$entity = $item->entity;
// Set the entity in the correct language for display.
if ($entity instanceof TranslatableInterface && $entity->hasTranslation($parent_entity_langcode)) {
$entity = $entity->getTranslation($parent_entity_langcode);
}
// Check entity access if needed.
if (!$this->needsAccessCheck($item) || $entity->access('view')) {
// Add the referring item, in case the formatter needs it.
$entity->_referringItem = $items[$delta];
$entities[$delta] = $entity;
}
}
}
return $entities;
}
/**
* Returns the referenced entities for display.
*
* The method takes care of:
* - checking entity access,
* - placing the entities in the language expected for display.
* It is thus strongly recommended that formatters use it in their
* implementation of viewElements($items) rather than dealing with $items
* directly.
*
* For each entity, the EntityReferenceItem by which the entity is referenced
* is available in $entity->_referringItem. This is useful for field types
* that store additional values next to the reference itself.
*
* @param \Drupal\Core\Field\EntityReferenceFieldItemListInterface $items
* The item list.
*
* @return \Drupal\Core\Entity\EntityInterface[]
* The array of referenced entities to display, keyed by delta.
*
* @see ::prepareView()
*/
protected function getEntitiesToView(EntityReferenceFieldItemListInterface $items)
{
$entities = array();
$parent_entity_langcode = $items->getEntity()->language()->getId();
foreach ($items as $delta => $item) {
// Ignore items where no entity could be loaded in prepareView().
if (!empty($item->_loaded)) {
$entity = $item->entity;
// Set the entity in the correct language for display.
if ($entity instanceof TranslatableInterface && $entity->hasTranslation($parent_entity_langcode)) {
$entity = $entity->getTranslation($parent_entity_langcode);
}
$access = $this->checkAccess($entity);
// Add the access result's cacheability, ::view() needs it.
$item->_accessCacheability = CacheableMetadata::createFromObject($access);
if ($access->isAllowed()) {
// Add the referring item, in case the formatter needs it.
$entity->_referringItem = $items[$delta];
$entities[$delta] = $entity;
}
}
}
return $entities;
}