How to add to array in mongo db collection - node.js

Question

Good evening,
I have my model
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const widgetSchema = new Schema({
city: {
type: String
}
})
const userSchema = new Schema({
name: {
type: String,
},
password: {
type: String
},
widgets: [widgetSchema]
})
const User = mongoose.model('user', userSchema);
module.exports = User;
And my question is how can I add elements to the widget array?
Should I use an update or what?
I think, firstly I need to find user document:
app.post('/addwidget', async (req, res) => {
const { city } = req.body;
try {
const user = await User.findOne({"name": "1"});
}
catch(err){
console.log(err)
}
})
and thank what? Is there method like push or something like that?

Answer 1

Try this one :
try {
const user = await Research.findOneAndUpdate({ name: '1' }, { $push: { widgets: { city: 'viking' }} })
if (user) return user;
else return false;
} catch (error) {
console.log(error);
}

Answer 2

you can use $push or $addToSet to add new item to the widgets array :
app.post('/addwidget', async (req, res) => {
const { city } = req.body; //
try {
const user = await User.findOneAndUpdate({"name": "1"} , { $push: { widgets: city }});
}
catch(err){
console.log(err)
}
})
or :
app.post('/addwidget', async (req, res) => {
const { city } = req.body;
try {
const user = await User.findOneAndUpdate({"name": "1"} , { $addToSet : {widgets: city }});
}
catch(err){
console.log(err)
}
})

Answer 3

From the doc: Adding Subdocs to Arrays, you can use MongooseArray.prototype.push()
E.g.
app.post('/addwidget', async (req, res) => {
const { city } = req.body;
try {
const user = await User.findOne({ name: '1' });
user.widgets.push({ city: 'viking' });
await user.save();
} catch (err) {
console.log(err);
}
});