Question

我正在为我的愿望清单使用代码。我需要愿望清单中的产品在我的网站上显示。我尝试了各种方法，但我认为会议只会这样做。请一些帮助。

我该怎么做。

@never_cache
def wishlist(request, template="shop/wishlist.html"):
    """
    Display the wishlist and handle removing items from the wishlist and
    adding them to the cart.
    """

    skus = request.wishlist
    error = None
    if request.method == "POST":
        to_cart = request.POST.get("add_cart")
        add_product_form = AddProductForm(request.POST or None,
                                          to_cart=to_cart,request=request)
        if to_cart:
            if add_product_form.is_valid():
                request.cart.add_item(add_product_form.variation, 1,request)
                recalculate_discount(request)
                message = _("Item added to cart")
                url = "shop_cart"
            else:
                error = add_product_form.errors.values()[0]
        else:
            message = _("Item removed from wishlist")
            url = "shop_wishlist"
        sku = request.POST.get("sku")
        if sku in skus:
            skus.remove(sku)
        if not error:
            info(request, message)
            response = redirect(url)
            set_cookie(response, "wishlist", ",".join(skus))
            return response

    # Remove skus from the cookie that no longer exist.
    published_products = Product.objects.published(for_user=request.user)
    f = {"product__in": published_products, "sku__in": skus}
    wishlist = ProductVariation.objects.filter(**f).select_related(depth=1)
    wishlist = sorted(wishlist, key=lambda v: skus.index(v.sku))
    context = {"wishlist_items": wishlist, "error": error}
    response = render(request, template, context)
    if len(wishlist) < len(skus):
        skus = [variation.sku for variation in wishlist]
        set_cookie(response, "wishlist", ",".join(skus))
    return response

Answer 1

会话！= Cookies。会话由后端服务器管理，cookie发送给用户浏览器。 Django uses a single cookie to help track sessions但您只是在这种情况下使用Cookie。

会话框架允许您基于每个站点访问者存储和检索任意数据。它在服务器端存储数据并抽象cookie的发送和接收。 Cookie包含会话ID - 而不是数据本身（除非您使用基于cookie的后端）。

很难说出你想要的东西，但是如果你只是想要计算你在cookie中保存的项目数量，你只需要计算你的sku并将它放在上下文中被发送到模板：

if len(wishlist) < len(skus):
    skus = [variation.sku for variation in wishlist]
    set_cookie(response, "wishlist", ",".join(skus))
context = {"wishlist_items": wishlist, "error": error, "wishlist_length":len(wishlist)}
return render(request, template, context)

并使用：

{{ wishlist_length }}

模板中的

如何在django视图中获取会话的长度

1 个答案: