How do I combine two $and statements in an $or statement in mongodb?

Question

I\'m searching mongodb for all messages from a person A to person B as well as all statements from person B to person A. That way I can make a conversation

from: person

Answer 1

Try this

db.collection('messages', function (err, collection) {
    collection.find(
        {  $or: [
                    {$and: [{ receiver: new BSON.ObjectID(req.user._id)}, {sender: new BSON.ObjectID(req.body.sender)}]}
                    {$and: [{ receiver: new BSON.ObjectID(req.body.sender)}, {sender: new BSON.ObjectID(req.user._id)}]}
        ]
}).sort({
        date: -1
    }).toArray(function (err, docs) {
        console.log(docs);
    }) });