def del_item_logic(request):
#收集参数
book_id = int(request.GET.get("id"))
print(book_id)
#获取session中的购物车对象
myCart = request.session.get("cart")
#调用其删除功能
myCart.delItem(book_id)
#更新session
request.session["cart"] = myCart
#从session中获取购物车恢复对象
myCart_backup = request.session.get("cart_backup")
if myCart_backup: #若垃圾车存在
myCart_backup.addItem(book_id)
request.session["cart_backup"] = myCart_backup
else: #若垃圾车不存在
myCart_backup = Cart()
myCart_backup.addItem(book_id)
request.session["cart_backup"] = myCart_backup
return redirect("Cart:cart_page")
def add_item_logic(request):
#定义添加商品的逻辑
#1,接收参数
book_id = int(request.GET.get("id"))
#,从session中获取购物车
myCart = request.session.get("cart")
#,判断购物车是否存在
if myCart:
#存在进行添加功能
myCart.addItem(book_id)
request.session["cart"] = myCart
return HttpResponse(1)
else: #若不存在
myCart = Cart()
myCart.addItem(book_id)
request.session["cart"] = myCart
return HttpResponse(1)
