RelationController: use RelationListIteratorAdapter

Author: adriendupuis

code_samples/front/embed_content/src/Controller/RelationController.php

@@ -3,6 +3,8 @@
 namespace App\Controller;
 
 use Ibexa\Contracts\Core\Repository\ContentService;
+use Ibexa\Contracts\Core\Repository\Iterator\BatchIterator;
+use Ibexa\Contracts\Core\Repository\Iterator\BatchIteratorAdapter\RelationListIteratorAdapter;
 use Ibexa\Contracts\Core\Repository\LocationService;
 use Ibexa\Core\MVC\Symfony\View\View;
 
@@ -25,11 +27,16 @@ public function showContentAction(View $view, $locationId): View
         $location = $this->locationService->loadLocation($locationId);
         $contentInfo = $location->getContentInfo();
         $versionInfo = $this->contentService->loadVersionInfo($contentInfo);
-        $relationList = $this->contentService->loadRelationList($versionInfo);
+        $relationListIterator = new BatchIterator(
+            new RelationListIteratorAdapter(
+                $this->contentService,
+                $versionInfo
+            )
+        );
 
         $items = [];
 
-        foreach ($relationList as $relationListItem) {
+        foreach ($relationListIterator as $relationListItem) {
             if ($relationListItem->hasRelation() && in_array($relationListItem->getRelation()->getDestinationContentInfo()->getContentType()->identifier, $acceptedContentTypes)) {
                 $items[] = $this->contentService->loadContentByContentInfo($relationListItem->getRelation()->getDestinationContentInfo());
             }