public IActionResult AddRecipeToList(RecipeViewModel RecipeViewModel)
        {
            var listItem = _listItemService.AddRecipeToShopList(RecipeViewModel.RecipeId, RecipeViewModel.ShopListId);

            if (listItem == null)
            {
                return(RedirectToAction("Index"));
            }

            ViewBag.ErrorMessage = "Receptet finns redan i den valda inköpslistan";

            PopulateShopList();

            return(View(RecipeViewModel));
        }