问如何用猫鼬解决查询问题

EN

 profile.js

// DOWNLOADING CSV OF PURCHASES
router.get("/purchased-items/:id", csvAbuseLimiter, (req, res) => {
  if (req.isAuthenticated()) {
    User.findOne({ id: req.query.id }, (err, foundUser) => {
      if (foundUser) {
        console.log(foundUser);
        const userPurchases = foundUser.purchases;
        const fields = ["name", "order", "duration", "asset"];
        const json2cvsParser = new Parser({ fields });
        try {
          const csv = json2cvsParser.parse(userPurchases);
          res.attachment(`${req.user.username}-purchases.csv`);
          res.status(200).send(csv);
          req.flash("success", "successful download");
        } catch (error) {
          console.log("error:", error.message);
          res.status(500).send(error.message);
        }
      }
    });
  }
});