Sub-schema properties are not updated mongoose - node.js

Question

little bit stuck with one issue which is related to mongoose. I have a Project schema with sub-schema(SingleUserSchema). Whenever I add a new User to this schema it saves everything and that's ok. The issue is that if I update the user, old values in schema does not update. Any ideas how to solve this case? Stuck here for a whole day already.
Schema:
const mongoose = require('mongoose');
const SingleUserSchema = new mongoose.Schema({
email: {
type: String,
required: true,
},
role: {
type: String,
required: true,
},
status: {
type: String,
required: true,
},
});
const ProjectSchema = new mongoose.Schema(
{
name: {
type: String,
required: [true, 'Provide project name'],
minlength: 5,
},
description: {
type: String,
required: [true, 'Provide description about the project'],
},
maxWorkingEmployees: {
type: Number,
required: [
true,
'Provide maximum number of employees working on this project',
],
},
currentlyWorkingEmployees: [SingleUserSchema],
status: {
type: String,
enum: ['Pending', 'In progress', 'Paused', 'Delayed', 'Completed'],
default: 'Pending',
},
createdBy: {
type: mongoose.Schema.ObjectId,
ref: 'User',
required: true,
},
},
{ timestamps: true }
);
module.exports = mongoose.model('Project', ProjectSchema);
Controller:
const attachEmployeeToProject = async (req, res) => {
const { projectId, userId } = req.params;
const project = await Project.findOne({ _id: projectId });
const user = await User.findOne({ _id: userId });
if (!user) {
throw new NotFoundError(`User with id ${userId} does not exists`);
}
if (!project) {
throw new NotFoundError(`Project with id ${userId} does not exists`);
}
const { role, email, status } = user;
const SingleUserSchema = {
email,
role,
status,
};
let currentlyWorkingEmployees = [
...project.currentlyWorkingEmployees,
SingleUserSchema,
];
req.body.currentlyWorkingEmployees = currentlyWorkingEmployees;
const updateProject = await Project.findOneAndUpdate(
{ _id: projectId },
req.body,
{
new: true,
runValidators: true,
}
);
res.status(StatusCodes.OK).json({ updateProject });
};
Maybe I just simply need to create a reference? Tried like this and received tons of errors, also felt lost how to create n references in array.
currentlyWorkingEmployees: [
{ type: mongoose.Schema.ObjectId, ref: 'User', required: true },
],
User schema:
const UserSchema = new mongoose.Schema({
username: {
type: String,
required: [true, 'Please provide username'],
minlength: 3,
maxlength: 50,
},
email: {
type: String,
required: [true, 'Please provide username'],
unique: true,
validate: {
validator: validator.isEmail,
message: 'Please provide valid email address',
},
},
password: {
type: String,
required: [true, 'Please provide password'],
validator: {
validate: {
validator: validator.isStrongPassword,
message: 'Please provide stronger password',
},
},
},
firstname: {
type: String,
required: [true, 'Please provide first name'],
},
lastname: {
type: String,
required: [true, 'Please provide last name'],
},
status: {
type: String,
enum: ['Working', 'Pause', 'Offline'],
default: 'Offline',
},
role: {
type: String,
enum: [
'Developer',
'Analyst',
'Designer',
'Architect',
'Project Manager',
'Owner',
'Teamleader',
'Employee',
],
default: 'Employee',
},
verificationToken: {
type: String,
},
isTokenVerified: {
type: Boolean,
default: false,
},
tokenValidationDate: {
type: Date,
default: null,
},
});

Answer 1

First, as far as I see you don't have a model called 'User' so that's the reason why your reference is not working.
currentlyWorkingEmployees: [
{ type: mongoose.Schema.ObjectId, ref: 'User', required: true },
]
https://mongoosejs.com/docs/populate.html
Second, you need to identify the user you want to update (based on userId) inside currentlyWorkingEmployees collection, if I understood correctly your problem.
Hope it helps!