public ActionResult Interested(ListingInterestedModel model)
        {
            if(Request.IsAjaxRequest())
                return Json(Status.OK<long>(model.BuildingId));

            return Redirect("/listing/" + model.BuildingId);
        }
        public ActionResult Interested(ListingInterestedModel model)
        {
            if (Request.IsAjaxRequest())
            {
                var status = this.listingAdapter.CreateInterestInBuilding(
                    User.Identity.Name,
                    model.BuildingId,
                    model.Content
                );

                if (status.StatusCode != 200)
                    return Json(Status.Error<bool>(status.Message, false));

                return Json(Status.OK<bool>(true));
            }

            return Redirect("/listing/" + model.BuildingId);
        }