activerecord i most mongo / mongo-mapper

Działało to pięknie

umieszcza model

  key :location_id, Integer, :required => true

    def location
        Location.find(location_id)
    end

model lokalizacji

  def self.find_places(id)
    Property.find_by_location_id(id)
  end

  def find_places
    Property.find_by_location_id(id)
  end