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

sites/all/modules/figli/edlp_studio/src/Controller/StudioUIController.php

@@ -7,6 +7,7 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 use Drupal\Core\Session\AccountInterface;
 use Drupal\User\UserDataInterface;
 use Drupal\Core\Url;
+use Drupal\Core\Language\LanguageInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 
 use Drupal\edlp_studio\Entity\Chutier;
@@ -60,11 +61,28 @@ class StudioUIController extends ControllerBase {
     $renderable = $this->buildStudioUI();
     $rendered = render($renderable);
 
+    $data = ['rendered'=>$rendered];
+
+    // translations links
+    // use Drupal\Core\Url;
+    // use Drupal\Core\Language\LanguageInterface;
+    $route_name = 'edlp_studio.studio_ui';
+    $links = \Drupal::languageManager()->getLanguageSwitchLinks(LanguageInterface::TYPE_URL, Url::fromRoute($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;
+    }
+
     // JSON
     $response = new JsonResponse();
-    $response->setData([
-      'rendered'=> $rendered,
-    ]);
+    $response->setData($data);
     return $response;
 
   }