require "action_dispatch" require "rails" module ActionDispatch class Railtie < Rails::Railtie railtie_name :action_dispatch config.action_dispatch.x_sendfile_header = "X-Sendfile" # Prepare dispatcher callbacks and run 'prepare' callbacks initializer "action_dispatch.prepare_dispatcher" do |app| # TODO: This used to say unless defined?(Dispatcher). Find out why and fix. require 'rails/dispatcher' ActionDispatch::Callbacks.to_prepare { app.routes_reloader.reload_if_changed } end end end