gistfile1.rb

class ActionDispatch::Routing::Mapper
  def draw(routes_name)
    instance_eval(File.read(Rails.root.join("config/routes/#{routes_name}.rb")))
  end
end

BCX::Application.routes.draw do
  draw :api
  draw :account
  draw :session
  draw :people_and_groups
  draw :projects
  draw :calendars
  draw :legacy_slugs
  draw :ensembles_and_buckets
  draw :globals
  draw :monitoring
  draw :mail_attachments
  draw :message_preview
  draw :misc

  root to: 'projects#index'
end

Another slight update to @kulesa's solution for namespace support. This adds support for scope, in addition to namespace routes ( see https://gist.github.com/2507892 ):

class ActionDispatch::Routing::Mapper
  def draw(routes_name)
    instance_eval(File.read(Rails.root.join("config/routes#{@scope[:path]}", "#{routes_name}.rb")))
  end
end

seems like routes get cached in development env, any advice on how to avoid it?

@freegenie +1

@freegenie +1

@freegenie +1
any workaround to that?

To get paths reloaded in dev mode, I ended up using in application.rb:

config.paths['config/routes'].unshift *Dir[Rails.root.join('config/routes/*.rb')]

Not the best line of code ever but does the job..

@apneadiving Thanks! Additionally I had to wrap the code in config/routes/*.rb files by a "ApplicationName::Application.routes.draw do" block otherwise I get undefined method `resources'.

@apeadiving @applicat I think it might be better form to throw that line into config/environments/development.rb rather than application.rb, since it is unclear to me how this would affect the loading order of the routes. This way, at the very least, in production the @dhh 's 'draw' method would allow your routes to be defined in the order that you declare each draw method.

@logical42 You could make a diff of "rake routes" results on your terminal before and after to see the affect on loading order.

But after some Rails updates my application is now on Rails 3.2.13 and don't need these hacks anymore (path unshifting and "ApplicationName::Application.routes.draw do" block).

Reload just seem to work through Rails now.

This is an awesome feature. Is it in master yet? I'm unable to find it in the code nor is it documented.

this fails for RAILS 4:

config.paths['config/routes'].unshift Dir[Rails.root.join('config/routes/.rb')]

Any thoughts?

@rubytastic you can always force Rails to reload routes from your middleware!

class RoutesReloader
  def initialize(app)
    @app = app
  end

  def call(env)
    Rails.application.reload_routes!

    @app.call(env)
  end
end

# in config/environments/development.rb

config.middleware.use RoutesReloader

Enjoy reloading routes on every request!

@shime it works, but makes application very slow:

time = Benchmark.measure { 10.times { Rails.application.reload_routes!  }  }

=> #<Benchmark::Tms:0x007fb4809b3840
 @cstime=0.0,
 @cutime=0.0,
 @label="",
 @real=4.654909,
 @stime=0.020000000000000018,
 @total=4.640000000000004,
 @utime=4.6200000000000045>

It adds more than 450 ms for every request.

Hopefully there is still other possible solution: we can use ActiveSupport::FileUpdateChecker for tracking changes in config/routes directory:

class RoutesReloader
  ROUTES_PATH = Dir.glob("config/routes/*.rb")

  def initialize(app)
    @app = app

    @routes_reloader = ActiveSupport::FileUpdateChecker.new(ROUTES_PATH) do
      Rails.application.reload_routes!
    end
  end

  def call(env)
    @routes_reloader.execute_if_updated

    @app.call(env)
  end
end

@sharipov-ru, it's much better but I'd like to add a small improvement:
ActiveSupport::FileUpdateChecker.new([], 'config/routes' => 'rb') do ... end
This way it should find new files as well.

Guys, it's very outdated. You now can just require other routes files without monkey patching, they just have to repeat the Rails.application.routes.draw do:
config/routes.rb:

Rails.application.routes.draw do
  load Rails.root.join("config/routes/dev.rb")
  #...
end

config/routes/dev.rb:

Rails.application.routes.draw do
  scope "dev" do
    # ...
  end
end

No dynamic reloading tho, probably @sharipov-ru's reloader still works.

Anyone found a nice solution on how to seperate route files and still make them auto reloading during development?

Edit: Going now with a combination of the mentioned solutions...

# config/environments/development.rb
class RoutesReloader
  def initialize(app)
    @app = app

    @routes_reloader = ActiveSupport::FileUpdateChecker.new([], 'config/routes' => 'rb') do
      Rails.application.reload_routes!
    end
  end

  def call(env)
    @routes_reloader.execute_if_updated

    @app.call(env)
  end
end

Rails.application.routes.draw do
  ...
  config.middleware.use RoutesReloader
end

# config/routes.rb
Rails.application.routes.draw do
  routes = [:admin_routes, :admin_routes_old, :public_routes, :api_routes]
  routes.each{ |route_file| load Rails.root.join("config", "routes", "#{route_file}.rb") }
end

How can I use concern with this conven?
https://guides.rubyonrails.org/routing.html#routing-concerns

concern :commentable do
  resources :comments
end
resources :messages, concerns: :commentable

can I do this?

draw :api, concerns: :commentable

or there another way?