Querying a MongoDB based on Mongo ID in a node.js app

Question

I\'m using a node.js and mongodb, and I\'m trying to query the database based on the mongo generated ID using the following:

    collection.findOne( {_id:doc         


        

Answer 1

First we need to get ObjectID from mongodb library and need to create new instance in following way., so that you will get the ObjectID of string. If your are using es6 in your code this code

import { ObjectID } from 'mongodb';

var emQuery = [
          {
            $match: {
              _id: new ObjectID(tlvaltResult[0].customers.createdBy)
            }
          },
          {
            $project: {
              _id:1,
              emailId:1,
              mobile:1
            }
          }
        ];

console.log(emQuery,'emQuery');

[ { '$match': { _id: 5ad83ff0b443435298741d3b } },
  { '$project': { _id: 1, emailId: 1, mobile: 1 } } ] 

var emResult = await User.getAggregation(emQuery);

console.log(emResult,'emResult');

[ { _id: 5ad83ff0b443435298741d3b,
    emailId: 'superAdmin@limitlessmobile.com' } ]