Mongoose - Can't push a subdocument into an array in parent Document - node.js

Question

I am trying to push a subdocument(ApplicationSchema) into my Job schema. But it doesn't seem to work.
Following is my Job Schema :
import mongoose from 'mongoose';
const Schema = mongoose.Schema;
var ApplicationSchema = require('./Application');
const Job = new Schema({
skills : {
type : Array
},
active : {
type : Boolean,
default : false
},
applications: [ApplicationSchema],
userId : {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
}
},{timestamps : true});
export default mongoose.model("Job", Job)
This is subdocument(ApplicationSchema). I have 5 more subdocuments in this schema.
I am pushing an object with a key-value pair of talentId and its value. But it doesn't work.
I get a new object in the array but the object I'm trying to push is not pushed.
import mongoose from 'mongoose';
const Schema = mongoose.Schema;
var notesSchema = require('./notesSchema');
var documentSchema = require('./documentSchema');
var assessmentSchema = require('./assessmentSchema');
var interviewScheduleSchema = require('./interviewScheduleSchema');
var referenceSchema = require('./referenceSchema')
const ApplicationSchema = new Schema({
talentId: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Talent'
},
applicationType: {
type: Number
}
notes: [notesSchema],
documents: [documentSchema],
assessment: [assessmentSchema],
interviewSchedule: [interviewScheduleSchema],
references: [referenceSchema]
},{
timestamps: true
});
export default ApplicationSchema;
Following is my code in the API endpoint
.post((req, res, next) => {
Job.findById(req.params.jobId)
.then((job) => {
if (job != null) {
job.applications.push(req.body);
job.save()
.then((job) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'application/json');
res.json(job);
})
}
else {
err = new Error('Job ' + req.params.jobId + 'not found')
err.status = 404;
return next(err);
}
}, (err) => next(err))
.catch((err) => next(err));
})
req.body contains following object
{ talentId: '5a813e1eb936ab308c4cae51' }

Answer 1

If you already have the id of the job document then you can push application object direct by doing the following:
Job.update(
{ _id: req.params.jobId },
{ $push: { applications: req.body} },
callback
);
or you can use promise to handle this. and if you are only saving id of the application then you may want to change your job schema to store Id of the applications instead of whole application schema.
Please read the documentation carefully as this is very basic update query.

Answer 2

You have,
talentId: {type: mongoose.Schema.Types.ObjectId,
ref: 'Talent'}
But your req.body contains:
{ talentId: '5a813e1eb936ab308c4cae51' }
It should be:
{ talentId: mongoose.Types.ObjectId('5a813e1eb936ab308c4cae51') }

Answer 3

Turns out there was nothing wrong with code.
I was using import and export default syntax which didn't seem work well with this.
import mongoose from 'mongoose';
const Schema = mongoose.Schema;
and
export default ApplicationSchema;
I replaced them with Common JS syntax and everything worked fine.
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
and
module.exports = ApplicationSchema;
I did this for Job document file and every subdocument file and the code worked.