This document summarizes the 13th round of the Rails Routing Outside In (ROR) Lab. It covers rails routing fundamentals like paths, URLs, controllers, actions, HTTP verbs, resource routing, nested resources, and more advanced routing topics like namespacing, member routes, and collection routes. Example code is provided to demonstrate generating paths and URLs, nested resources, and more RESTful actions.

1. The 13th Round of ROR Lab.
Rails Routing
from the Outside In
(1)
May 26th, 2012
Hyoseong Choi
ROR Lab.

2. Rails Router
http://blog.org
_path _url
A Controller Action
ROR Lab.

3. $ rake routes
posts GET /posts(.:format) posts#index
POST /posts(.:format) posts#create
new_post GET /posts/new(.:format) posts#new
edit_post GET /posts/:id/edit(.:format) posts#edit
post GET /posts/:id(.:format) posts#show
PUT /posts/:id(.:format) posts#update
DELETE /posts/:id(.:format) posts#destroy
ROR Lab.

4. An Incoming Request
GET /posts/17
?
ROR Lab.

5. Generating
paths & URLs
@patient = Patient.find(17)
<%= link_to "Patient Record", patient_path(@patient) %>
URL = host + port + PATH
ROR Lab.

6. Resource Routing
• Action 7 brothers
• index / show / new / edit
create / update / destroy
in config/routes.rb
resources :photos
“sine” - show, index, new, edit
ROR Lab.

7. An Incoming Request
DELETE /posts/17
?
ROR Lab.

8. HTTP verbs
new create C
• POST
R
• GET
index show
URL
• PUT update U
• DELETE
destroy D
Note : routing orders ROR Lab.

9. Multiple Resources
resources :photos
resources :books
resources :videos
resources :photos, :books, :videos
ROR Lab.

10. Singular Resources
match "profile" => "users#show"
resource :geocoder
ROR Lab.

11. Singular Resources
resource :geocoder
Action 6 brothers no index action
ROR Lab.

12. Controller
Namespacing
Admin:: module prefix
namespace :admin do
resources :posts, :comments
scope :module => "admin" do
resources :posts, :comments
scope "/admin" do
resources :posts, :comments
ROR Lab.

13. Controller
Namespacing
namespace :admin do
resources :posts, :comments
Admin:: module prefix
ROR Lab.

14. Controller
Namespacing
scope :module => "admin" do
resources :posts, :comments
Admin:: module prefix
ROR Lab.

15. Controller
Namespacing
scope "/admin" do
resources :posts, :comments
without Admin:: module prefix
ROR Lab.

16. Nested Resources
class Magazine < ActiveRecord::Base
has_many :ads
end
class Ad < ActiveRecord::Base
belongs_to :magazine
resources :magazines do
resources :ads
ROR Lab.

17. Nested Resources
resources :magazines do
resources :ads
ROR Lab.

18. Paths & URLs
From Objects
<%= link_to "Ad details", magazine_ad_path(@magazine, @ad) %>
<%= link_to "Ad details", url_for([@magazine, @ad]) %>
<%= link_to "Ad details", [@magazine, @ad] %>
ROR Lab.

19. More RESTful
Actions
• Member Routes
resources :photos do
member do
get 'preview'
end
URL : /photos/1/preview with GET
Named Routes
: preview_photo_url and preview_photo_path
ROR Lab.

20. More RESTful
Actions
• Collection Routes
resources :photos do
collection do
get 'search'
end
URL : /photos/search with GET
Named Routes
: search_photos_url and search_photos_path
ROR Lab.

21. 감사합니다.