我有这个路由控制器来删除一个项目：

exports.deleteShoppingItem = asyncHandler(async (req, res, next) => {
const shoppingItem = await ShoppingItem.findById(req.params.id);

if (!shoppingItem) {
    return next(
        new ErrorResponse(`shoppingItem not found on id ${req.params.id}`, 404)
);
}

//check if the current user is the owner of the shopping item
if (shoppingItem.user.toString() !== req.user.id) {
return next(
  new ErrorResponse(
    `user with user is not allowed to update this shopping item`,
    401
  )
);
}

await shoppingItem.deleteOne();

这是我的中间件，每当删除一个项目时，我都要执行它：

ShoppingItemSchema.post("remove", async function () {
  console.log("removing")
  await this.constructor.calculateTotalBoughtCost(this.user),
  await this.constructor.calculateTotalCost(this.user);
});

但是这个post remove永远不会被调用，即使这些项目正在被成功删除。
我试着使用remove()，但它说删除不是功能。