Mongoose saving dynamic array of subdocuments in one shot - arrays

Question

I have searched high and low but haven't found a solution.
I am trying to save an array of subdocuments (that is dynamic).
Here's my schema:
const EventSchema = new Schema({
user: {
type: mongoose.Schema.Types.ObjectId,
ref: 'users'
},
title: {
type: String,
required: true
},
attendee:[
{
email: {
type: String,
required: true
},
name: {
type: String,
required: true
},
status: {
type: String
}
}]
});
Here's the route:
router.post('/', auth, async (req, res) => {
const {title, attendee: [{ email, name, status }] } = req.body
try{
const newEvent = new Event({
title,
user: req.user.id,
attendee: [{ email, name, status }]
});
const event = await newEvent.save();
if (!event) throw Error('Something went wrong saving the event');
res.status(200).json(event);
catch (e) {
res.status(400).json({ msg: e.message });
}
});
Currently I am only getting 1 element in the array to save.
The items in the array will always be different.
I don't have the option of creating the "event" first and then adding "attendees".
Example of input:
{
"title": "Something",
"attendee": [
{
"email": "email#gmail.com",
"name": "Bob"
},
{
"email": "sandwich#gmail.com",
"name": "Martha"
}
]
}
Output:
{
"_id": "5ef1521f06a67811f74ba905",
"title": "Something",
"user": "5ecdaf3601cd345ddb73748b",
"attendee": [
{
"_id": "5ef1521f06a67811f74ba906",
"email": "email#gmail.com",
"name": "Bob"
}
],
"__v": 0
}

Answer 1

Instead of destructuring for the one object of the array, you can get the whole array of attendee from the request body and save it as it is.
router.post('/', auth, async (req, res) => {
const eventObj = {
user: req.user.id,
title : req.body.title,
// get the whole array of attendee objects from the request
attendee: req.body.attendee
}
try{
const newEvent = new Event(eventObj);
const event = await newEvent.save();
if (!event) throw Error('Something went wrong saving the event');
res.status(200).json(event);
catch (e) {
res.status(400).json({ msg: e.message });
}
});

Answer 2

If I understand you correctly, you should not destructure attendee and insert into your new Event every attendee (choosing which key to insert in database).
const {
title,
attendee,
} = req.body;
const newEvent = new Event({
title,
user: req.user.id,
attendee: attendee.map(x => ({
email: x.email,
name: x.name,
status: x.status,
})),
});