Output referenced entity (e.g. term) in same language as referencer.

Rendering translated referenced entity. Closes #3482119

src/Processor/DefaultFieldItemProcessor.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\custom_elements\Processor;
 
+use Drupal\Core\Entity\EntityRepositoryInterface;
 use Drupal\Core\Entity\Exception\UndefinedLinkTemplateException;
 use Drupal\Core\Entity\TypedData\EntityDataDefinitionInterface;
 use Drupal\Core\Field\FieldItemInterface;
@@ -17,6 +18,21 @@ class DefaultFieldItemProcessor implements CustomElementProcessorInterface {
 
   use CustomElementsProcessorFieldUtilsTrait;
 
+  /**
+   * The entity repository.
+   */
+  protected EntityRepositoryInterface $entityRepository;
+
+  /**
+   * CustomElementGenerator constructor.
+   *
+   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
+   *   The entity repository.
+   */
+  public function __construct(EntityRepositoryInterface $entity_repository) {
+    $this->entityRepository = $entity_repository;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -42,16 +58,19 @@ class DefaultFieldItemProcessor implements CustomElementProcessorInterface {
           // accessible and linkable.
           if (($property->getTargetDefinition() instanceof EntityDataDefinitionInterface
             && $property->getTarget() && $entity = $property->getTarget()->getValue())
-            && $this->entityIsAccessible($entity, $element) && $url = $entity->toUrl()) {
-            $nested_element = new CustomElement();
-            $nested_element->setTag('a');
-            $generated_url = $url->toString(TRUE);
-            $nested_element->addCacheableDependency($generated_url);
-            $nested_element->setAttribute('href', $generated_url->getGeneratedUrl());
-            $nested_element->setAttribute('type', $entity->getEntityTypeId());
-            $nested_element->setSlot('default', $entity->label());
-            $nested_element->addCacheableDependency($entity);
-            $element->setSlotFromCustomElement($name, $nested_element);
+            && $this->entityIsAccessible($entity, $element)) {
+            $entity = $this->entityRepository->getTranslationFromContext($entity) ?? $entity;
+            if ($url = $entity->toUrl()) {
+              $nested_element = new CustomElement();
+              $nested_element->setTag('a');
+              $generated_url = $url->toString(TRUE);
+              $nested_element->addCacheableDependency($generated_url);
+              $nested_element->setAttribute('href', $generated_url->getGeneratedUrl());
+              $nested_element->setAttribute('type', $entity->getEntityTypeId());
+              $nested_element->setSlot('default', $entity->label());
+              $nested_element->addCacheableDependency($entity);
+              $element->setSlotFromCustomElement($name, $nested_element);
+            }
           }
         }
         catch (UndefinedLinkTemplateException $exception) {