language siwtchers links are working now (reloading the whole site but with the right url)

sites/all/modules/figli/edlp_search/src/Controller/EdlpSearchController.php

@@ -6,6 +6,8 @@ use Drupal\Core\Controller\ControllerBase;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Drupal\Core\Form\FormBuilder;
 use Drupal\search_api\Entity\Index;
+use Drupal\Core\Url;
+use Drupal\Core\Language\LanguageInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\JsonResponse;
 
@@ -72,14 +74,29 @@ class EdlpSearchController extends ControllerBase {
     $this->buildRenderable();
 
     $rendered = render($this->renderable);
+    $data = [
+      'rendered' => $rendered
+    ];
+
+    // translations links
+    $route_name = 'edlp_search.edlp_search_controller_searchForm';
+    $links = \Drupal::languageManager()->getLanguageSwitchLinks(LanguageInterface::TYPE_URL, Url::fromRoute($route_name));
+    if (isset($links->links)) {
+      $translations_build = [
+        '#theme' => 'links__language_block',
+        '#links' => $links->links,
+        '#attributes' => ['class' => ["language-switcher-{$links->method_id}",],],
+        '#set_active_class' => TRUE,
+      ];
+      $translations_rendered = \Drupal::service('renderer')->executeInRenderContext(new RenderContext(), function () use ($translations_build) {return render($translations_build);});
+
+      $data['translations_links'] = $translations_rendered;
+    }
 
     // TODO: make respponse cachable
     $response = new JsonResponse();
-    $response->setData([
-      'rendered'=> $rendered,
-    ]);
+    $response->setData($data);
     return $response;
-
   }
 
   public function autocomplete(Request $request){