public async Task <IActionResult> Details(int id, int quantity, string userName)
{
BasketItem item = new BasketItem();
item.ProductID = id;
item.UserBasketID = _context.UserBasket.Where(user => user.UserID == userName).FirstOrDefault().ID;
item.Quantity = quantity;
item.CheckedOut = false;
await _cart.AddBasketItem(item);
var product = await _product.GetProductById(id);
return(RedirectToAction("Index"));
}