Search code examples
javascriptreactjsmongodbasync-awaitobjectid

Finding MongoDB documents by _id failing on the type of ObjectId

I'm struggling to find MongoDB documents by their _id field in my ReactJS project.

My collection has documents that looks like so (for example):

    _id: ObjectId("5f6651112efc19f33b34fc39")
    title: "This is a title"
    status: true

I'm using this (greatly simplified) code in a function to find the documents that match the id passed in:

const id = '5f6651112efc19f33b34fc39';
await mongoCollection.find({_id:ObjectId(id)});

ObjectId is defined like so:

const ObjectId = require('mongodb').ObjectID;

Yet even if I hard coded the id variable to be the ObjectId string from the document in my database, it fails with this error:

Uncaught (in promise) Error: invalid ObjectId, ObjectId.id must be either a string or a Buffer, but is [{"type":"Buffer","data":[]}]

Printing out id and ObjectId(id) before the await line results in the following:

Console.log screenshot

How should I be satisfying this warning?

Edit: I'm defining my app/collection like so:

const app = new Realm.App({ id: "<app-id>", timeout: 10000 });
const mongo = app.services.mongodb('mongodb-atlas');
const mongoCol = mongo.db('<databaseName>').collection('<collectionName>');
Solution

  • Seems like a known BUG, try to use bson like:

    const bson = require('bson');

const id = '5f6651112efc19f33b34fc39';
const bsonObjectId = new bson.ObjectId(id);
await mongoCollection.find({_id: bsonObjectId });