public async Task <IActionResult> Create(ArticleViewModel model) { if (ModelState.IsValid) { var tags = new List <Tag>(); if (!string.IsNullOrEmpty(model.SelectedTags)) { tags = (await tagsService.ParseTags(model.SelectedTags)).ToList(); } model.Article.User = await userManager.GetUserAsync(HttpContext.User); model.Article.Created = DateTime.Now; await articlesRepository.CreateWithTagsAsync(model.Article, tags); return(RedirectToAction("Detail", new { id = model.Article.Id })); } ModelState.AddModelError("", "Vyplňte všechna povinná pole prosím."); return(View(new ArticleViewModel { Categories = categoriesRepository.FindAll().Select(c => new SelectListItem { Value = c.Id.ToString(), Text = c.Title }), Tags = tagsRepository.FindAll().Select(t => new SelectListItem { Value = t.Id.ToString(), Text = t.Title }), Article = model.Article, SelectedTags = model.SelectedTags })); }