huddle.rb

  def as_json(options={})
    # TODO: users.count and rating_sum are generating way too may queries,
    # we should do something about them.
    {
      :latitude => latitude,
      :longitude => longitude,
      :title => title,
      :id => id,
      :users => users.count,
      :cap => distance_cap,
      :permanent => permanent,
      :rating_sum => rating_sum,
    }
  end