$searchTerm = (isset($request->get('search_user')['term']) ? $request->get('search_user')['term'] : '');
$qb = $em->getRepository('WallabagUserBundle:User')->getQueryBuilderForSearch($searchTerm);
$searchTerm = (isset($request->get('search_user')['term']) ? $request->get('search_user')['term'] : '');
$qb = $em->getRepository('WallabagUserBundle:User')->getQueryBuilderForSearch($searchTerm);