testOr.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var FooSchema = new Schema({
  dob: { type: Date},
  num: {type : Number},
  test : {
    bla : {type: Number}
  }
});

FooSchema.virtual('virtualpath').get(function(){return 'Ima virtual';});
mongoose.connect("mongodb://test:[email protected]/test");
Foo = mongoose.model('Foo', FooSchema);

Foo.remove({}, function(err) {
  var f;
  f = new Foo({
    dob: Date.now(),
    num: 1,
    test : {
      bla: 2
    }
  });

  f.save(function(err) {
    Foo.find().$or([{'test.bla' : 2},{'test.bla' : 3}]).run(function(err, doc) {
      console.log(doc);
    });
  });
});

Hm, weird, I'm seeing the document in my console without any problem when I run this... What version of mongodb are you using? I know that the sub-document support for the $or operator has been added with mongodb 2, could be missing if you have < 2.0.

Poking @aheckmann, got an idea?

Thanks for the reply. It smells like a mongo version issue. Verifying now.

Alright, keep me in the loop, I'd be curious to know the resolution of this issue.

All good after updating to mongodb 2.0.5. Sorry for the false alarm and thanks again for the help.

My pleasure! Glad to hear it fixed it the issue :).