public IActionResult Buy() { if (!ModelState.IsValid) { return(RedirectToAction("Cart")); } var user = _userManager.GetUserId(User); var cartId = _orderServices.GetCart(user); if (!_orderServices.Buy(user, cartId)) { return(RedirectToAction("FrontPage", "Home")); } return(RedirectToAction("FrontPage", "Home")); }