Node.js Mongoose.js string to ObjectId function

Is there a function to turn a string into an objectId in node using mongoose? The schema specifies that something is an ObjectId, but when it is saved from a string, mongo tells me it is still just a string. The _id of the object, for instance, is displayed as objectId("blah").

You can do it like so:

var mongoose = require('mongoose');
var id = mongoose.Types.ObjectId('4edd40c86762e0fb12000003');

You can use this also

const { ObjectId } = require('mongodb');
const _id = ObjectId("4eb6e7e7e9b7f4194e000001");

it's simplest way to do it

You can do it like this:

var mongoose = require('mongoose');
var _id = mongoose.mongo.BSONPure.ObjectID.fromHexString("4eb6e7e7e9b7f4194e000001");

EDIT: New standard has fromHexString rather than fromString

Judging from the comments, you are looking for:

mongoose.mongo.BSONPure.ObjectID.isValid

Or

mongoose.Types.ObjectId.isValid

var mongoose = require('mongoose');
var _id = mongoose.mongo.ObjectId("4eb6e7e7e9b7f4194e000001");

I couldn't resolve this method (admittedly I didn't search for long)

mongoose.mongo.BSONPure.ObjectID.fromHexString

If your schema expects the property to be of type ObjectId, the conversion is implicit, at least this seems to be the case in 4.7.8.

You could use something like this however, which gives a bit more flex:

function toObjectId(ids) {

    if (ids.constructor === Array) {
        return ids.map(mongoose.Types.ObjectId);
    }

    return mongoose.Types.ObjectId(ids);
}

Just see the below code snippet if you are implementing a REST API through express and mongoose. (Example for ADD)

....
exports.AddSomething = (req,res,next) =>{
  const newSomething = new SomeEntity({
 _id:new mongoose.Types.ObjectId(), //its very own ID
  somethingName:req.body.somethingName,
  theForeignKey: mongoose.Types.ObjectId(req.body.theForeignKey)// if you want to pass an object ID
})
}

...

Hope it Helps

If you want to use schema

const yourSchemma = new Schema({
"customerId": {
    type: mongoose.Types.ObjectId,
    required: true
}

});