Cannot convert string to ObjectId in NodeJS

Question

I'm pulling my hair out.

I've tried using mongoose:

const ObjectId = require('mongoose').Types.ObjectId;

let id = new ObjectId(peson["_id"]);

When I console.log(id) it just shows the string value. When I append the id into an array in another object I'm using, and I JSON.stringify() that whole object I get just the '1djd892jowidj3wfejk93' string values.

When I pass my searchObject to Mongo, it doesn't return results.

I've also tried using the native MongoDB driver for node:

const {ObjectId} = require('mongodb');

let id = Objectid("1djd892jowidj3wfejk93")

this also returns just a string value when when logging to the console and also embedding in parent search request. JSON.stringify() shows just the string, and the query returns empty.

the native NodeJs mongoDb driver

if you pass the string as the value to search on, does it work? I query using a string, e.g. const devices = await Device.find({ owner: req.user._id });. I think mongoDB handles any conversion to an ObjectId — dikuw
– dikuw, Commented Feb 12, 2020 at 23:05

ha6755ad · Accepted Answer · 2023-12-08 17:20:50Z

2

The correct way to do this as of December 2023 is as follows

import { ObjectId } from 'mongodb';

const id = ObjectId.createFromHexString(person._id);

If you explore the ObjectId class a bit you can see the other similar methods available. There's a solution in there for sure.

edited Dec 8, 2023 at 17:20

answered Dec 8, 2023 at 14:18

ha6755ad

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Comments

dk-na · Accepted Answer · 2020-02-12 23:05:44Z

1

Try the following:

const {ObjectID} = require('mongodb');
const id = new ObjectID('5e059042b091f6000a4bf236');

answered Feb 12, 2020 at 23:05

dk-na

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Comments

Deepak Preman · Accepted Answer · 2020-02-13 04:37:04Z

0

Try this

var mongoose = require('mongoose');
var id = mongoose.Types.ObjectId('1djd892jowidj3wfejk93');

answered Feb 13, 2020 at 4:37

Deepak Preman

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Nikhil Savaliya · Accepted Answer · 2020-02-13 04:32:30Z

-1

You don't need to use extra dependency if you are using mongoose,

const mongoose = require('mongoose');

function convertToObjectID(id) {
    return mongoose.Types.ObjectId(id)
}

answered Feb 13, 2020 at 4:32

Nikhil Savaliya

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