public ActionResult Edit(EntriesEditViewModel viewModel)
        {
            ValidateEntry(viewModel.Entry);

            if (ModelState.IsValid)
            {
                var entry  = viewModel.Entry;
                var userId = User.Identity.GetUserId();
                if (!_entriesRepository.EntryIsOwnedByUser(viewModel.Id, userId))
                {
                    return(HttpNotFound());
                }

                entry.UserId = userId; // override the userId with the actual one
                _entriesRepository.Update(entry);

                TempData["Message"] = "Your entry was successfully updated!";

                return(RedirectToAction("Index"));
            }

            viewModel.Init(_activitiesRepository);

            return(View(viewModel));
        }