1. routes.rb を
もう一度考えてみた
@tkawa
2012.7.18 Shibuya.rb

2. @tkawa
川村 徹
RESTとかRailsとか書いて
るブログ
http://d.hatena.ne.jp/tkawa/
Web認知行動療法
U2plus http://u2plus.jp/

3. routes.rb
書いてますか？
resources
使ってますか？

4. Hoge::Application.routes.draw do
resources :users
end

5. @kenn
Is it only me who think rails routes.rb is a
mess?
https://twitter.com/kenn/status/184076612504006656
@miyagawa
config/routes.rb goddamnit
https://twitter.com/miyagawa/statuses/221405166853828608
@jugyo
routes.rb 開くたびに憂鬱になる
https://twitter.com/jugyo/status/14690985107

6. routes.rb sucks?

7. routes.rb の
悪いところを考えてみた

8. I.
resources が
直感的でない

9. 基本7アクション
index
show
new
edit
create
update
destroy

10. resources :users
$ rake routes
users GET /users(.:format) users#index
POST /users(.:format) users#create
new_user GET /users/new(.:format) users#new
edit_user GET /users/:id/edit(.:format) users#edit
user GET /users/:id(.:format) users#show
PUT /users/:id(.:format) users#update
DELETE /users/:id(.:format) users#destroy

11. resources :users
GET POST PUT DELETE
/users index create - -
/users/:id show - update destroy
GET /users/new → new
GET /users/:id/edit → edit

12. II.
Convention over
Configuration じゃない

13. 7アクションが「規約」なら
resources も書かなくてもいい
のでは？

14. Conventional Routes
https://github.com/tkawa/conventional_routes

15. http://d.hatena.ne.jp/tkawa/20120407/p1

16. Conventional Routes
app/controllers/admin/special/licenses_controller.rb
app/controllers/admin/users_controller.rb
app/controllers/users_controller.rb
namespace :admin do
namespace :special do
resources :licenses
end
resources :users
end
resources :users

17. Conventional Routes
• routes.rb に何も書かなくても、
コントローラが存在すれば、自動的に
resources とみなす
• ディレクトリは namespace
• もしコントローラの中まで見れば、
Sinatra的なこともできそう

18. Sinatra的なことを
もうやってる人がいた！
（しかも2年前）

20. Routes are unnecessary configuration.
The seven standard controller actions are legacy.
Become intimate with your URLs – don’t abstract
them away.
Decrease the distance between thought and
implementation.
Let the controller do its job.
http://peepcode.com/blog/2010/rethinking-rails-3-routes

21. His idea
# Class method and HTTP-style methods.
class ReportsController < ApplicationController
before_filter :authenticate
resource "/reports(/:id)"
get(:collection) do
end
get(:member) do |id|
end
put(:member) do |id|
end
end

22. Astaire
https://github.com/pehrlich/astaire

23. Astaire (like Sinatra)
# Class method and HTTP-style methods.
class ReportsController < ApplicationController
before_filter :authenticate
get "/reports" do
end
get "/reports/:id" do
end
put "/reports/:id" do
end
end

24. 2年も経ってるのに反応薄
いし、やっぱりいまいち？

25. Sinatra式の問題点
• Viewの命名規約が別途必要
{view}.html.erb どういう名前にする？
• resources のパターンを活かせない
GET POST PUT DELETE
/reports index create - -
/reports/:id show - update destroy

26. いろいろ考えたけど
• 今の routes.rb はそれなりにベター
• 基本7アクションを残すなら、
match (get, post, put, delete) はむしろ書かなく
てすむようにしたい
• とにかく resources (resource) にすることで、
routes.rb はシンプルになる。REST的にもOK

27. 例
resources :messages, except: [ :new ] do
post :trash, :restore, on: :member
resources :image_attachments, only: :index
end
https://github.com/rails/routing_concerns

28. resources :messages, except: [ :new ] do
post :trash, :restore, on: :member
resources :image_attachments, only: :index
end
resources :messages, except: [ :new ] do
member do
put :trashed
delete :trashed
end
resources :image_attachments, only: :index
end

29. resources :messages, except: [ :new ] do
member do
put :trashed
delete :trashed
end
resources :image_attachments, only: :index
end
※ちょっと意味が変わる
resources :messages, except: [ :new ] do
resource :trashed, only: [:create, :destroy]
resources :image_attachments, only: :index
end
# “partial” option does not exist in fact
resources :messages, except: [ :new ], partial: [:trashed] do
resources :image_attachments, only: :index
end

30. Railsにおける
RESTfulなURL設計勉強会
Sendagaya.rb #12
7/23 (月) 19:00-
http://www.zusaar.com/event/324057