public async Task <IActionResult> View(int id)
        {
            Product product = await _invManager.GetProductByID(id);

            if (_signInManager.IsSignedIn(User))
            {
                Basket basket = await _bsktManager.GetBasket(_userManager.GetUserId(User));

                ViewData["IsInBasket"] = _bsktManager.BasketHasItem(basket, id);
            }
            return(View(product));
        }