findOneAndUpdate 在 mongodb/nodejs 中不起作用

Question

I am trying to update a Record in mongodb using nodejs but it isn't working I am getting data on the other side and everything seems to be working but it just won't update the record

My server Side code is

 console.log('here',req.params.userId )
  User.findOneAndUpdate({ _id: req.params.userId }, {$set:req.body}, { new: true }, function (err, users) {
    if (err)
        res.send(req.params.userId);
res.json(users);
});

It returns a null value I don't know why. Any Help would be Appreciated.

Answer 1

This is because Mongo's ObjectId() came rendered as string in req.body:

do this:

console.log('here',req.params.userId )

User.findOneAndUpdate({ _id: new ObjectId(req.params.userId) }, {$set:req.body}, { new: true }, function (err, users) {
    if (err) res.send(req.params.userId);

    res.json(users);
});

You can require ObjectId from bson package as I work with TypeScript the import I use is import { ObjectId } from 'bson'; in pure javascript should be import ObjectId = require('bson');

Answer 2

You can do it like that:

User.findOneAndUpdate(
  { _id: new ObjectId(req.params.userId) },
  ...req.body,
  { new: true }
)