Mongoose - Find document's child array by a specific field - node.js

Question

I had spent hours trying to work out how to get records from a document's child array by a specific field, but I failed it.
I would like to pass a personId by a web service to find which meeting he/she has been invited to. As a result, I could track down whether the invitee has accept to join the meeting or not.
Basically, I have the following JSON output:
{
"status": "success",
"requestedAt": "2021-03-28T22:47:03+11:00",
"size": 1,
"meetings": [
{
"invitedMembers": [
{
"isJoined": false,
"_id": "605ffbc00a21ed718c992549",
"person": "a123",
"__v": 0
}
]
}
]
}
with a controller like this:
const memberId = "a123";
const meetings = await Meeting.find({
'invitedMembers.member': memberId
}).populate('invitedMembers');
a meeting model class like below:
const mongoose = require('mongoose');
const meetingSchema = new mongoose.Schema({
invitedMembers: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'InvitedMembers'
}
]
});
const Meeting = mongoose.model(
'Meeting',
meetingSchema
);
module.exports = Meeting;
and a invitedMembers class like this:
const mongoose = require('mongoose');
const invitedMembersSchmea = new mongoose.Schema({
member: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Member',
required: true
},
isJoined: {
type: Boolean,
default: false
}
});
const InvitedMembers = mongoose.model(
'InvitedMembers',
invitedMembersSchmea
);
module.exports = InvitedMembers;
The Member schema only contains a basic personal information such as first name, last name and etc.

Answer 1

I ended up solving my own problem by using a different approach where I changed my data structure by adding invitedMembers as an embedding model in the meeting model and updated the person field in the invitedMembers schema to _id.
Updated Meeting model class:
const mongoose = require('mongoose');
const invitedMembersSchmea = new mongoose.Schema({
_id: {
type: String,
required: true
},
isJoined: {
type: Boolean,
default: false
}
});
const meetingSchema = new mongoose.Schema({
invitedMembers: [
{
type: invitedMembersSchmea
}
]
});
const Meeting = mongoose.model(
'Meeting',
meetingSchema
);
module.exports = Meeting;
As a result, I can find the invited member by ID using the following query:
const memberId = "a123";
const meetings = await Meeting.find({
'invitedMembers._id': memberId
});