CastError：对于值“ {userId：'5c48a95df9bd9a33c0ff9405”的转换为ObjectId失败

Question

对于模型“路径”的“用户”，在值“ {userId：\'5c48a95df9bd9a33c0ff9405 \'，\ n用户名：\'ahsan \'，\ n iat：1549024353，\ n exp：1549110753}”中，对对象ID的投射失败“出租””

router.get("/manage", UserControl.loginMiddleware, (req, res) => {
const user = res.locals.user;
Rental.where({ user })
.populate("bookings")
.exec((err, foundRentals) => {
  if (err) {
    return res.status(422).send({ errors: mongoErrors(err.errors) });
  }
  return res.json(foundRentals);
  });
});

Answer 1

router.get("/manage", UserControl.loginMiddleware, (req, res) => {
const user = res.locals.user;
Rental.where("user",user.userId)
.populate("bookings")
.exec((err, foundRentals) => {
  if (err) {
  return res.status(422).send({ errors: mongoErrors(err.errors) });
     }
 return res.json(foundRentals);
   });
});