public ActionResult ProductDetailReviews(int productId)
        {
            var product = _productService.GetProductById(productId);

            if (product == null || !product.AllowCustomerReviews)
            {
                return(Content(""));
            }

            var model = new ProductReviewsModel();

            _helper.PrepareProductReviewsModel(model, product, 10);

            return(PartialView("Product.Reviews", model));
        }