public ActionResult Edit(FeedbackInput input)
        {
            if (!ModelState.IsValid)
            {
                return View("Create", input);
            }

            var feedback = repo.Get(input.Id);
            feedback.Comments = HtmlUtil.SanitizeHtml(input.Comments);
            repo.Save();

            return Json(new { });
        }
        public ActionResult Create(FeedbackInput input)
        {
            if (!ModelState.IsValid)
            {
                return View(input);
            }

            input.Comments = HtmlUtil.SanitizeHtml(input.Comments);

            var feedback = new Feedback { Comments = input.Comments };
            feedback = repo.Insert(feedback);
            repo.Save();

            Session["lastFeedback"] = feedback.Id;
            return Json(new { });
        }