public async Task <RedirectToActionResult> EditItemIngredients(int id, IFormCollection collection)
{
var checkedIngredientIds = collection.Keys.Where(x => x.StartsWith("ingredient-"));
var checkedIngredients = checkedIngredientIds.Select(ingredientId =>
_context.Ingredients.First(x => x.IngredientId == int.Parse(ingredientId.Remove(0, 11)))).ToList();
var updatedCartItem = await _cartItemService.EditCartItemIngredients(checkedIngredients,
_cartService.GetCart().CartItems.First(ci => ci.CartItemId == id));
_cartService.UpdateItemIngredients(updatedCartItem);
return(RedirectToAction("Index"));
}