// GET: Facets
        public ActionResult Index()
        {
            var indexname           = $"events_{RenderingContext.Current.ContextItem.Database.Name.ToLower()}_index";
            var index               = ContentSearchManager.GetIndex(indexname);
            var urlService          = new UrlService();
            var checkedDurations    = urlService.GetParamValue(System.Web.HttpContext.Current.Request.RawUrl, "duration");
            var checkedDifficulties = urlService.GetParamValue(System.Web.HttpContext.Current.Request.RawUrl, "difficulty");
            var search              = urlService.GetParamValue(System.Web.HttpContext.Current.Request.RawUrl, "search");
            var model               = _service.GetFacets(index, search);

            model.Mark(checkedDurations?.Split(','), checkedDifficulties?.Split(','));
            return(PartialView(model));
        }