public ActionResult Edit(int id, NuggetViewModel viewModel)
        {
            if (ModelState.IsValid)
            {
                var nugget = _nuggetService.GetNuggetByID(id);
                nugget.Description = viewModel.Description;
                nugget.Title = viewModel.Title;
                _nuggetService.SaveNugget(nugget);

                return RedirectToAction("Index", new {id = nugget.ID});
            }
            return View(viewModel);
        }
        public ActionResult Add(NuggetViewModel viewModel, string Tags)
        {
            if (ModelState.IsValid)
            {
                if (_memberAuthenticationService.LoggedIn)
                {
                    var newNugget = viewModel.BuildNugget();
                    newNugget.MemberID = _memberAuthenticationService.LoggedInMember.ID;

                    _nuggetService.SaveNugget(newNugget);

                    _tagsService.AssignTagsByNameToContentType(Tags, newNugget);

                    return RedirectToAction("Index", new {id = newNugget.ID});
                }
                else
                {
                    ModelState.AddModelError("", "You must be logged in to post a nugget");
                }
            }

            return View(viewModel);
        }