Hello.

In Mongoid 2 I can write query like this:

Note.where{"$and" => [{"$or" => [{:message.exists => true}, {:message.ne => 'Hello'}]}, {"$or" =>[{:message_alarm.exists => true},{:message_alarm.ne => "mute"}]}]}

However this syntax is no longer feasible in Mongoid 3, so is there a way to write something like that in Mongoid 3 ?