public async Task <IActionResult> PostComment([FromBody] ListViewModel vm)
        {
            if (ModelState.IsValid)
            {
                try {
                    var owner = await userManager.GetUserAsync(HttpContext.User);

                    var idea = context.Ideas.Include(r => r.Stats).Include(r => r.Comments).Include(r => r.Owner).FirstOrDefault(r => r.Id == vm.IdeaId);
                    if (idea.Owner != owner)
                    {
                        Notification.Add(NotificationType.Commented, idea.Owner, owner, idea, context);
                    }
                    Comment.Add(owner, idea, vm.Comment);
                    UserStats.AddComment(owner, context);
                    Stats.AddComments(idea);
                    await context.SaveChangesAsync();

                    var ideaEx   = IdeaEx.IdeaById(vm.IdeaId, owner, context);
                    var JsonData = JsonConvert.SerializeObject(ideaEx, Formatting.Indented, new JsonSerializerSettings {
                        ContractResolver = new CamelCasePropertyNamesContractResolver()
                    });
                    return(Json(JsonData));
                } catch (Exception ex) {
                    ex = ex;
                }
            }
            else
            {
                var JsonDataError = JsonConvert.SerializeObject(ModelState.Values, Formatting.Indented, new JsonSerializerSettings {
                    ContractResolver = new CamelCasePropertyNamesContractResolver()
                });
                return(Json(JsonDataError));
            }
            return(Json(""));
        }