Filter by id in on one to many field

Question

Say I have this userSchema :

const userSchema = new Schema({
    firstName: {type: String, required: true},
    lastName: {type: String, required: true},
    email: {type: String, required: true, unique: true},
});

and this chatSchema :

const chatSchema = new Schema({
    user_ids: {type: [String]},
});

I wonder if I could do a search to get all chats from a user that has their user_id inside chat's user_ids and how could I do that.

Answer 1

If you are referencing the user schema and you just need to query the user_id you can simply do it like this:

 db.chat.aggregate([{$macth:{"user_ids" : user_id}}])