public IActionResult Create([FromForm] CreateArticleViewModel viewModel)
        {
            string imageDirectory = Path.Combine(webHostEnvironment.WebRootPath, "ArticleImage");

            try
            {
                if (ModelState.IsValid == false)
                {
                    return(View(viewModel));
                }
                if (authorService.DoesAuthorExist(viewModel.Email))
                {
                    tagService.AddMultipleTags(viewModel.ArticleTags);
                    var tags = tagService.GetForArticleFromString(viewModel.ArticleTags);
                    articleService.Add(viewModel.Title,
                                       viewModel.Content,
                                       viewModel.Email,
                                       viewModel.Image,
                                       imageDirectory,
                                       tags);
                    return(RedirectToAction("Index"));
                }
                if (viewModel.DoesAuthorExist == true)
                {
                    viewModel.DoesAuthorExist = false;
                    return(View(viewModel));
                }
                tagService.AddMultipleTags(viewModel.ArticleTags);
                var myTags = tagService.GetForArticleFromString(viewModel.ArticleTags);
                authorService.Add(viewModel.Email, viewModel.FirstName, viewModel.LastName);
                articleService.Add(viewModel.Title,
                                   viewModel.Content,
                                   viewModel.Email,
                                   viewModel.Image,
                                   imageDirectory,
                                   myTags);
                return(RedirectToAction("Index"));
            }
            catch (Exception e)
            {
                return(BadRequest(e.Message));
            }
        }