Routing in Rails 3 - Athens Ruby Meetup #4

RAILS 3 Where Routing gets awesome Athens Ruby Meetup #4 Nov. 11 2010 Thursday, November 11, 2010

Me Σάββας Γεωργίου Software engineer - Ruby on Rails Developer http://healthleap.com Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs - photos_path returns /photos Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs - photos_path returns /photos - new_photo_path returns /photos/new Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs - photos_path returns /photos - new_photo_path returns /photos/new - photo_path(id) returns /photos/:id Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs - photos_path returns /photos - new_photo_path returns /photos/new - photo_path(id) returns /photos/:id - new_photo_url returns http://mydomain:port/photos/new Thursday, November 11, 2010

Routing in Rails Each time a request comes to the server, Rails needs to direct it to some action in some controller "controller"=>"searches" "action"=>"show", "id"=>"allergists", Generates Paths and URLs - photos_path returns /photos - new_photo_path returns /photos/new - photo_path(id) returns /photos/:id - new_photo_url returns http://mydomain:port/photos/new - new_photo_url(id) returns http://mydomain:port/photos/:id Thursday, November 11, 2010

Resources Routing Thursday, November 11, 2010

Resources Routing resources :photos Thursday, November 11, 2010

Resources Routing resources :photos HTTP supports 4 verbs. GET, POST, PUT, DELETE Browsers are dump enough to forget that, but rails can still make it with hidden parameters. Thursday, November 11, 2010

Resources Routing #2 Thursday, November 11, 2010

Resources Routing #2 new_photo_path() photo_path(@photo) GET for new GET for show edit_photo_path() PUT for update GET for edit DELETE for destroy photos_path() GET for index POST for create Thursday, November 11, 2010

Resources Routing #2 new_photo_path() photo_path(@photo) GET for new GET for show edit_photo_path() PUT for update GET for edit DELETE for destroy photos_path() GET for index POST for create We build internet applications over HTTP. We ‘d better use 100% of our protocol. Thursday, November 11, 2010

More Resources Routing - Members Thursday, November 11, 2010

More Resources Routing - Members What if we need more RESTful actions for our model? Thursday, November 11, 2010

More Resources Routing - Members What if we need more RESTful actions for our model? resources :photos do member do get ‘preview’ get ‘print’ put ‘ﬂag’ end end Thursday, November 11, 2010

More Resources Routing - Members What if we need more RESTful actions for our model? resources :photos do Available helpers member do preview_photo_path(@photo) get ‘preview’ print_photo_path(@photo) get ‘print’ ﬂag_photo_path(@photo) put ‘ﬂag’ end preview_photo_url(@photo) end ..... Thursday, November 11, 2010

More Resources Routing - Members What if we need more RESTful actions for our model? resources :photos do Available helpers member do preview_photo_path(@photo) get ‘preview’ print_photo_path(@photo) get ‘print’ flag_photo_path(@photo) put ‘flag’ end preview_photo_url(@photo) end ..... Our Application responds to GET /photos/:id/preview {:controller=>"photos", :action=>"preview"} GET /photos/:id/print {:controller=>"photos", :action=>"print"} PUT /photos/:id/flag {:controller=>"photos", :action=>"flag"} Thursday, November 11, 2010

More Resources Routing - Collections Thursday, November 11, 2010

More Resources Routing - Collections resources :photos do collection do get ‘search’ end end Thursday, November 11, 2010

More Resources Routing - Collections resources :photos do available helpers collection do get ‘search’ search_photos_path end search_photos_url end Thursday, November 11, 2010

More Resources Routing - Collections resources :photos do available helpers collection do get ‘search’ search_photos_path end search_photos_url end Our Application responds to GET /photos/search {:controller=>"photos", :action=>"search"} Thursday, November 11, 2010

Named routes - Match Thursday, November 11, 2010

Named routes - Match For special cases and pretty URLs Thursday, November 11, 2010

Named routes - Match For special cases and pretty URLs I.E. Login action looks better in /login than /user_sessions/new match ‘login‘ => ‘user_sessions#new’ match ‘logout‘ => ‘user_sessions#destroy’ Thursday, November 11, 2010

Named routes - Match For special cases and pretty URLs I.E. Login action looks better in /login than /user_sessions/new match ‘login‘ => ‘user_sessions#new’ match ‘logout‘ => ‘user_sessions#destroy’ Our Application responds to GET /login {:controller=>"user_sessions", :action=>"new"} GET /logout {:controller=>"user_sessions", :action=>"destroy"} Thursday, November 11, 2010

Named routes - Match For special cases and pretty URLs I.E. Login action looks better in /login than /user_sessions/new match ‘login‘ => ‘user_sessions#new’ match ‘logout‘ => ‘user_sessions#destroy’ Our Application responds to GET /login {:controller=>"user_sessions", :action=>"new"} GET /logout {:controller=>"user_sessions", :action=>"destroy"} Available Helpers login_path, login_url, logout_path, logout_url Thursday, November 11, 2010

Routes Priority - the 1st WINS Thursday, November 11, 2010

Routes Priority - the 1st WINS - Routes are matches matched in top to bottom order as they appear in the routes ﬁle Thursday, November 11, 2010

Routes Priority - the 1st WINS - Routes are matches matched in top to bottom order as they appear in the routes ﬁle - The ﬁrst route to match an incoming request wins Thursday, November 11, 2010

Routes Priority - the 1st WINS - Routes are matches matched in top to bottom order as they appear in the routes file - The first route to match an incoming request wins - Lower routes may never fire, if a higher route hides them by matching requests Thursday, November 11, 2010

Routes Priority - the 1st WINS - Routes are matches matched in top to bottom order as they appear in the routes file - The first route to match an incoming request wins - Lower routes may never fire, if a higher route hides them by matching requests >> rake routes Thursday, November 11, 2010

Rails 3 vs Rails 2.3 Thursday, November 11, 2010

Rails 3 vs Rails 2.3 The old style map commands still work as before with a backwards compatibility layer, however this will be removed in the 3.1 release. Thursday, November 11, 2010

Rails 3 vs Rails 2.3 The old style map commands still work as before with a backwards compatibility layer, however this will be removed in the 3.1 release. The routes are attached to your application, which is now its own object and used throughout Railties Thursday, November 11, 2010

Thursday, November 11, 2010

Rack it UP Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end -- (NOT) -- Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end -- (NOT) -- In Rails 3 we can have routes ONLY to Rack Applications. Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end -- (NOT) -- In Rails 3 we can have routes ONLY to Rack Applications. match "/home", :to => “home#show” Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end -- (NOT) -- In Rails 3 we can have routes ONLY to Rack Applications. match "/home", :to => “home#show” match "/home", :to => HomesController.action(:show) Thursday, November 11, 2010

Rack it UP In Rails 3 we can have routes directly to Rack Applications. MyApplication::Application.routes do match "/home", :to => OtherApp end -- (NOT) -- In Rails 3 we can have routes ONLY to Rack Applications. HomesController.action(:show) returns a fully valid Rack match "/home", :to => “home#show” application pointing at the show action of HomesController. match "/home", :to => HomesController.action(:show) Thursday, November 11, 2010

Better Constraints Thursday, November 11, 2010

Better Constraints Native support for subdomains Thursday, November 11, 2010

Better Constraints Native support for subdomains Regular Expressions in constraints Thursday, November 11, 2010

Better Constraints Native support for subdomains Regular Expressions in constraints Constraints can be objects & can be speciﬁed in block form Thursday, November 11, 2010

Thursday, November 11, 2010

Thank you! Resources http://yehudakatz.com/2009/12/26/the-rails-3-router-rack-it-up/ http://guides.rubyonrails.org/routing.html http://www.slideshare.net/GreggPollack/rails-3-beautiful- code-3219240 Thursday, November 11, 2010

Routing in Rails 3 - Athens Ruby Meetup #4

by Savvas Georgiou on Nov 15, 2010

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Routing in Rails 3 - Athens Ruby Meetup #4 — Presentation Transcript