How can I add a two column unique id to the mongodb in a meteor app?

Question

I am trying to create a two column unique index on the underlying mongodb in a meteor app and having trouble. I can\'t find anything in the meteor docs. I have tried from

Answer 1

Actually why not use upsert on the server with a Meteor.method and you could also send also track it with a ts: // Server Only

Meteor.methods({
 add_only_once = function(id1,id2){
   SomeCollection.update(
     {first_id:id1,another_id:id2},{$set:{ts:Date.now()}},{upsert:True});
 }
});

// Client

Meteor.call('add_only_once',doc1._id, doc2._id);

// actual code running on server

if(Meteor.is_server) {
    Meteor.methods({
        register_code: function (key,monitor) {
             Codes.update({key:key},{$set:{ts:Date.now()}},{upsert:true});
        }
     ...