osem-fcy/app/controllers/api/v1/tracks_controller.rb

module Api
  module V1
    class TracksController < Api::BaseController
      load_resource :conference, find_by: :short_title
      respond_to :json

      def index
        tracks = @conference ? @conference.program.tracks : Track.all

        respond_with tracks, callback: params[:callback]
      end
    end
  end
end