ajax nav for productions is working

sites/all/themes/custom/edlptheme/edlptheme.theme

@@ -7,12 +7,23 @@
 
 
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Template\Attribute;
 
 // function edlptheme_preprocess_input(&$vars){
   // dsm($vars, 'vars');
   // $vars['attributes']['placeholder'] = "salut";
 // }
 
+function edlptheme_preprocess_node(&$vars){
+  $node = $vars['elements']['#node'];
+  $options = ['absolute' => TRUE];
+  $url = \Drupal\Core\Url::fromRoute('entity.node.canonical', ['node' => $node->id()], $options);
+  $system_path = $url->getInternalPath();
+  $vars['link_attributes'] = new Attribute(array(
+    'data-drupal-link-system-path' => $system_path=='' ? '<front>' : $system_path
+  ));
+}
+
 /**
  * Implements hook_form_alter
  */