EntityTestReferenceCustomCacheTagFormatter.php in Drupal 8
File
core/modules/system/tests/modules/entity_test/src/Plugin/Field/FieldFormatter/EntityTestReferenceCustomCacheTagFormatter.php
View source
<?php
namespace Drupal\entity_test\Plugin\Field\FieldFormatter;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase;
class EntityTestReferenceCustomCacheTagFormatter extends EntityReferenceFormatterBase {
public function viewElements(FieldItemListInterface $items, $langcode) {
return [
'#cache' => [
'tags' => [
'custom_cache_tag',
],
],
];
}
}