Why can't mongo push my ObjectId in a predefined array? - mongodb

Question

I have made my model, it has this Schema:
const CompanySchema = new Schema({
companyName: {
type: String,
required: [true,'the name of the companies working on the game are missing.']
},
companyAge: {
type: Number,
required: [true,'the age of the company is missing.']
},
companyDeveloper:[{
type: Schema.Types.ObjectId,
ref: "developer"
}]
});
I am trying to push a element into the companyDeveloper array like this:
addDev(req,res,next){
const companyId = req.params.id;
const companyDeveloper = ObjectId.fromString(req.body.companyDeveloper);
Company.findById({_id: companyId})
.then((company) => company.companyDeveloper.push({companyDeveloper}))
.then(company => res.send(company))
.catch(next);
}
but I keep getting this error:
"error": "ObjectId is not defined".
Before I tried casting it, I got this error
Cast to ObjectId failed for value
How can I get this function to work?
printscreen
postman call error

Answer 1

The ObjectId class from mongoose is defined on Mongoose.Schema.Types.ObjectId
You can require it in the file where you define addDev
const ObjectId = require('mongoose').Schema.Types.ObjectId
or load mongoose into a global where you initialize your node code so you can access it in any file:
global.Mongoose = require('mongoose')
And then use it in your method:
const companyDeveloper = Mongoose.Schema.Types.ObjectId.fromString(req.body.companyDeveloper);