ASP.NET MVC-从购物车中删除

Question

我和我的小组一直在努力为我们的网站找到答案，我们终于采取了步骤向社区寻求帮助！

目标是尝试并将我们网站的按钮链接到"从购物车中删除"，并将数据库设置为0，并刷新页面并显示减少。

购物车视图的JavaScript似乎不起作用，但我不确定这是否最终是问题。我们遵循了许多指南，例如MVC音乐商店和ASP.NET文档。

index.cshtml：

script src="/Scripts/jquery-1.5.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
    $(function () {
        // Document.ready -> link up remove event handler
        $(".RemoveLink").click(function () {
            // Get the id from the link
            var recordToDelete = $(this).attr("data-id");
            if (recordToDelete != '') {
                // Perform the ajax post
                $.post("/ShoppingCart/RemoveFromCart", { "id": recordToDelete },
                    function (data) {
                        // Successful requests get here
                        // Update the page elements
                        if (data.ItemCount == 0) {
                            $('#row-' + data.DeleteId).fadeOut('slow');
                        } else {
                            $('#item-count-' + data.DeleteId).text(data.ItemCount);
                        }
                        $('#cart-total').text(data.CartTotal);
                        $('#update-message').text(data.Message);
                        $('#cart-status').text('Cart (' + data.CartCount + ')');
                    });
            }
        });
    });

    function handleUpdate() {
        // Load and deserialize the returned JSON data
        var json = context.get_data();
        var data = Sys.Serialization.JavaScriptSerializer.deserialize(json);
        // Update the page elements
        if (data.ItemCount == 0) {
            $('#row-' + data.DeleteId).fadeOut('slow');
        } else {
            $('#item-count-' + data.DeleteId).text(data.ItemCount);
        }
        $('#cart-total').text(data.CartTotal);
        $('#update-message').text(data.Message);
        $('#cart-status').text('Cart (' + data.CartCount + ')');
    }
</script>
<h3>
    <em>Review</em> your cart:
</h3>
<div id="update-message">
</div>
<div style="height:600px; overflow:auto; padding-top: 50px; margin-left: 200px; width: 1050px; ">
    <table id="cart-summary" border="1" frame="void" rules="rows" style="width:100%;margin-left:auto; margin-right: auto;">
        <tr class="data-table">
            <th colspan="1">
                Item(s)
            </th>
            <th colspan="1" style="text-align:center;">
                Price
            </th>
            <th colspan="1" style="text-align:center;">
                Quantity
            </th>
            <th colspan="1" style="text-align:center;">
                Total
            </th>
            <th></th>
        </tr>

        @foreach (var item in Model.CartItem)
        {
            <tr>
                <td style="margin:auto;width:500px;">
                    <div style="float:left;">
                        <a href=@Url.Content(String.Format("~/Books/Details/{0}", item.Book.id))>
                            <img class="img-responsive" src="@Url.Content(String.Format("~/Content/img/books/{0}.jpg",item.Book.ISBN))" style="width: 100px; height: 150px;" />
                        </a>
                    </div>
                    <div style="margin-top:37px;">
                        <a href=@Url.Content(String.Format("~/Books/Details/{0}", item.Book.id))>
                            <span>@Html.DisplayFor(modelItem => item.Book.Title)</span><br />
                        </a>
                        <span style="text-align:left;">@Html.DisplayFor(modelItem => item.Book.Author)</span><br /><br />
                        <span style="text-align:left">ISBN: @Html.DisplayFor(modelItem => item.Book.ISBN)</span>
                    </div>
                </td>
                <td>
                    <p style="text-align:center;">@item.Book.PriceNew</p>
                </td>
                <td>
                    <p style="text-align:center;">@item.Quantity</p>
                    <a href="#" class="RemoveLink" data-id="@item.RecordId">Remove from cart</a>
                    <!--data-url='Url.Content("~/ShoppingCart/RemoveFromCart")'>
                        Remove from cart
                    </a>-->
                </td>
                <td>
                    <p>@Model.CartTotal</p>
                </td>
            </tr>
        }
        <tr>
            <td></td>
            <td>
                <p style="padding-top:15px;"></p>
                <br />
                <button type="button">
                    @Html.ActionLink("Back to List", "../Books/Index")
                </button>
            </td>
            <td></td>
            <td id="cart-total">
                <p style="padding-top: 10px;font-weight:bold;color:rgb(179,0,0);font-size:18px;">Subtotal: @Model.CartTotal</p>
                <button type="button">
                    @Html.ActionLink("Checkout!", "AddressAndPayment", "Checkout")
                </button>
            </td>
        </tr>
    </table>
</div>

下一组代码是C＃代码。CART.CS：

public int RemoveFromCart(int id)
        {
            var cartItem = bookDb.Carts.Single(
                c => (c.CartId == ShoppingCartId)
                && c.RecordId == id);
            int itemCount = 0;
            if (cartItem != null)
            {
                if (cartItem.Quantity > 1)
                {
                    cartItem.Quantity--;
                    itemCount = cartItem.Quantity;
                }
                else
                {
                    bookDb.Carts.Remove(cartItem);
                }
                bookDb.SaveChanges();
            }
            return itemCount;
        }

最后，要完成相互关联的MVC集合集……我们还认为这里可能存在错误。同样，我们只是不够经验。

shoppingcartcontroller.cs：

 // GET: ShoppingCart
        public ActionResult Index()
        {
            var cart = ShoppingCart.GetCart(this.HttpContext);
            // Set up our View Model
            var viewModel = new ShoppingCartViewModel
            {
                CartItem = cart.GetCartItems(),
                CartTotal = cart.GetTotal()
            };
            return View(viewModel);
        }
        // GET: Book/Details/5
        // Button that allows you to add to the cart you will be redirected to the Shopping cart index page
        public ActionResult AddToCart(string id)
        {
            var addedBook = bookdb.Books.Single(book => book.ISBN == id);
            var cart = ShoppingCart.GetCart(this.HttpContext);
            cart.AddToCart(addedBook);
            bookdb.SaveChanges();
            return RedirectToAction("Index");
        }
        // this is attached to the remove to cart button in the shopping cart index page, the index page will then reload
        [HttpPost]
        public ActionResult RemoveFromCart(int id)
        {
            // Retrieve the current user's shopping cart
            var cart = ShoppingCart.GetCart(this.HttpContext);
            // Get the name of the book to display confirmation
            string bookName = bookdb.Carts.Single(book => book.RecordId == id).Book.Title;
            // Remove from cart
            int itemCount = cart.RemoveFromCart(id);
            // Display confirmation message
            var results = new ShoppingCartRemoveViewModel
            {
                Message = Server.HtmlEncode(bookName) + " has been removed from the shopping cart",
                CartTotal = cart.GetTotal(),
                CartCount = cart.GetCount(),
                ItemCount = itemCount,
                DeleteId = id 
            };
            //return view();
            return Json(results);
        }

感谢一堆！

Answer 1

index.cshtml

<script>

$(document).on('click', '.del-CartDetail', function () {       
var id = $(this).data("id");        
$("#hdnCartDetailId").val(id);       
 $("#modal-del-cartdetail").modal({            
backdrop: 'static',       
keyboard: false,          
show: true     
  });
});

 $("#btnModalSubmit").click(function () {        
    var buttonText = $("#btnModalSubmit").html();
    $("#btnModalSubmit").attr('disabled', '').html('<i class="fa fa-spinner fa-spin"></i>&nbsp; ' + buttonText);

var id = $("#hdnCartDetailId").val();

$.ajax({
            url: '/CartDetail/DeleteCartDetail',
            type: "POST",
            dataType: "json",
            contentType: 'application/json; charset=utf-8',
            data: JSON.stringify({ Id: id }),
            success: function (result) {
                debugger;
                if (result.success) {
                    $('#modal-del-cartdetail .close').click();
                    //Page redirect after delete record
                    window.location.reload();
                    $('#modal-del-cartdetail').show();
                    INTAPP.Util.Notification(true, "Selected Cart(s) have been successfully deleted.");
                } else {
                    INTAPP.Util.HandleLogout(data.message);
                    INTAPP.Util.Notification(false, "Some error occured while deleting selected Cart.");
                }
                $("#btnModalSubmit").attr('disabled', null).html('Submit');
            },
            error: function (xhr, status, error) {
                INTAPP.Util.Notification(false, error);
                $("#btnModalSubmit").attr('disabled', null).html('Submit');
            }
        });
    });    
</script>

@Html.Partial("ConfirmModal", new ModalViewModel
   {
       Id = "modal-del-cartdetail",
       IsAlertModel = false,
       Title = "Delete Product",
       Message = "Are you sure you want to delete the cart detail?",
       HiddenElementId = "hdnCartDetailId"
   })