public ActionResult CreateAnswer(InputAnswerViewModel model)
        {
            if (!ModelState.IsValid)
            {
                TempData["NotificationError"] = "Sorry but something wrong. Please try angain later and don't forget content on answer";
                return(Redirect(Request.UrlReferrer.ToString()));
            }

            var userId = User.Identity.GetUserId();

            var answer = new Answer
            {
                Content = model.Content,
                UserId  = userId,
                PostId  = model.PostId
            };

            m_Answers.CreateAnswer(answer);

            TempData["Notification"] = "You successfully answer on post.";

            return(Redirect(Request.UrlReferrer.ToString()));
        }