I want to make a function that create a new task for a specific user - node.js

Question

I have 2 models in relation a User model and a Task model each user have inside an empty task array and I want a function that get the user by email and push a new task to the users task array I tried a lot but I don't made that function to work so I need some help here is my code.
User model:
const { Schema } = mongoose;
//connecting mongoose to mongoDB
mongoose.connect("mongodb+srv://tudor:tudor#cluster0.gbojb.mongodb.net/<dbname>?retryWrites=true&w=majority", { useNewUrlParser: true, useUnifiedTopology: true, useFindAndModify: false });
const { Post } = require("./PostModel")
const userSchema = new Schema({
name: {
type: String,
required: true,
},
email: {
type: String,
required: true,
unique: true,
},
password: {
type: String,
required: true,
minlength: [5, 'The password should have more then 5 characters']
},
age: {
type: Number,
required: true,
},
description: {
type: String,
required: true,
maxlength: [300, 'Description should have less then 300 characters']
},
tasks: [{
type: Schema.Types.ObjectId,
ref: "task"
}]
})
const User = mongoose.model('User', userSchema);
exports.User = User
task model
const mongoose = require("mongoose")
const Schema = mongoose.Schema
let TaskSchema = new Schema({
content: String,
owner: {
type: Schema.Types.ObjectId,
ref: "User"
}
})
module.exports = mongoose.model("Task", TaskSchema)
And here I want to make the function :
const createNewTask = async (req, res, next) => {
const userEmail = req.params.id;
}

Answer 1

This is how your function will work:
const createNewTask = async (req, res, next) => {
const userEmail = req.params.id;
// find user first by email
const userData = await User.findOne({email: userEmail});
// add check here if user exist or not (not writing it for now)
// now create task by extract task payload (assuming you have detail in body)
const taskData = await Task.create({
content: req.body.content,
owner: userData._id,
});
// now push task id in user
await User.updateOne({
email: userEmail
}, {
$push: {tasks: taskData._id},
});
}
There can be some errors since didn't tested it but you get the idea how to do it.