public PartialViewResult SetLike(CommentLikesViewModel model)
        {
            if (Session["oAuthUser"] != null)
            {
                OAuthUser oAuthUser = (OAuthUser)Session["oAuthUser"];

                Like like = _likeRepository.Likes.Where(l => l.CommentId == model.CommentId && l.UserId == oAuthUser.UserId && l.UserProvider == oAuthUser.Provider).FirstOrDefault();

                if (like == null)
                {
                    like = new Like();
                    like.UserId = oAuthUser.UserId;
                    like.UserProvider = oAuthUser.Provider;
                    like.CommentId = model.CommentId;
                    _likeRepository.Save(like);
                }
                else
                {
                    _likeRepository.Delete(like.Id);
                }
            }

            model.LikesCount = _commentRepository.GetById(model.CommentId).Likes.Count;
            return PartialView("~/Views/Posts/_Like.cshtml", model);
        }
        public void Save(Like like)
        {
            if (like.Id == 0)
            {
                _db.Likes.Add(like);
            }
            else
            {
                Like dbEntry = _db.Likes.Find(like.Id);

                if (dbEntry != null)
                {
                    dbEntry.CommentId = like.CommentId;
                    dbEntry.UserId = like.UserId;
                    dbEntry.UserProvider = like.UserProvider;
                }
            }

            _db.SaveChanges();
        }