EntityReferenceIdFormatter.php in Drupal 8
Same filename and directory in other branches
File
core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceIdFormatter.phpView source
<?php
namespace Drupal\Core\Field\Plugin\Field\FieldFormatter;
use Drupal\Core\Field\FieldItemListInterface;
/**
* Plugin implementation of the 'entity reference ID' formatter.
*
* @FieldFormatter(
* id = "entity_reference_entity_id",
* label = @Translation("Entity ID"),
* description = @Translation("Display the ID of the referenced entities."),
* field_types = {
* "entity_reference"
* }
* )
*/
class EntityReferenceIdFormatter extends EntityReferenceFormatterBase {
/**
* {@inheritdoc}
*/
public function viewElements(FieldItemListInterface $items, $langcode) {
$elements = [];
foreach ($this
->getEntitiesToView($items, $langcode) as $delta => $entity) {
if ($entity
->id()) {
$elements[$delta] = [
'#plain_text' => $entity
->id(),
// Create a cache tag entry for the referenced entity. In the case
// that the referenced entity is deleted, the cache for referring
// entities must be cleared.
'#cache' => [
'tags' => $entity
->getCacheTags(),
],
];
}
}
return $elements;
}
}
Classes
Name | Description |
---|---|
EntityReferenceIdFormatter | Plugin implementation of the 'entity reference ID' formatter. |