public async Task <IActionResult> AddDescriptionGroup(DescriptionGroupDto descriptionGroupDto) { if (descriptionGroupDto == null) { return(RedirectToAction("DescriptionGroups")); } var descriptionGroup = _mapper.Map <DescriptionGroup>(descriptionGroupDto); OperationResult result = await _shopManager.CreateDescriptionGroupAsync(descriptionGroup); if (!result.Succeeded) { TempData["Message"] = string.Join(Environment.NewLine, result.Errors.Select(x => x.Description)); } else { TempData["Message"] = $"Группа \"{descriptionGroup.Name}\" успешно добавлена."; } return(RedirectToAction("DescriptionGroups")); }