Routing Rails
Estimated reading time: 4 minutesWhat is routing ?
routing demo structure
rake routes
----------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------ ---- ----------- ------------------
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
PATCH /users/:id(.:format) users#update
PUT /users/:id(.:format) users#update
DELETE /users/:id(.:format) users#destroy
test_photos GET /test/photos(.:format) test#photos
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Basic Routing
# config\routes.rb
get 'users', to: 'users#show'
get 'users', to: :show, controller: 'users'
# params
get '/users/:id', to: 'users#show'
# redirect
get '/stories', to: redirect('/articles')
# root path '/'
root to: 'pages#main'
root 'pages#main'
constraints
get 'users/:id', to: 'users#show', constraints: { id: /[A-Z]\d{5}/
get 'users/:id', to: 'users#show', id: /[A-Z]\d{5}/
get '/:id', to: 'articles#show', constraints: { id: /^\d/ }
resource (crud)
crudbase routing
resources :photos
# only index
resources :photos, only: [:index]
# except index
resources :photos, except: [:create, :index, :edit]
- crud routes for photos
-----------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------ ---- ----------- -------------------
photos GET /photos(.:format) photos#index
POST /photos(.:format) photos#create
new_photo GET /photos/new(.:format) photos#new
edit_photo GET /photos/:id/edit(.:format) photos#edit
photo GET /photos/:id(.:format) photos#show
PATCH /photos/:id(.:format) photos#update
PUT /photos/:id(.:format) photos#update
DELETE /photos/:id(.:format) photos#destroy
-----------------------------------------------------------------
multiple resources
resources :photos, :books, :videos
# or
resources :photos
resources :books
resources :videos
namespace
namespace :admin do
resources :articles
end
------------------------------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------- ---- ----------- ------------------
admin_articles GET /admin/articles(.:format) admin/articles#index
POST /admin/articles(.:format) admin/articles#create
new_admin_article GET /admin/articles/new(.:format) admin/articles#new
edit_admin_article GET /admin/articles/:id/edit(.:format) admin/articles#edit
admin_article GET /admin/articles/:id(.:format) admin/articles#show
PATCH /admin/articles/:id(.:format) admin/articles#update
PUT /admin/articles/:id(.:format) admin/articles#update
DELETE /admin/articles/:id(.:format) admin/articles#destroy
-------------------------------------------------------------------------------------
- without
/admin/namespace
scope module: 'admin' do
resources :articles
end
# or
resources :articles, module: 'admin'
------------------------------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------- ---- ----------- ------------------
articles GET /articles(.:format) admin/articles#index
POST /articles(.:format) admin/articles#create
new_article GET /articles/new(.:format) admin/articles#new
edit_article GET /articles/:id/edit(.:format) admin/articles#edit
article GET /articles/:id(.:format) admin/articles#show
PATCH /articles/:id(.:format) admin/articles#update
PUT /articles/:id(.:format) admin/articles#update
DELETE /articles/:id(.:format) admin/articles#destroy
-------------------------------------------------------------------------------------
- without
namespacedirectory
scope '/admin' do
resources :articles
end
# or
resources :articles, path: '/admin/articles'
---------------------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------ ---- ----------- -----------------
articles GET /admin/articles(.:format) articles#index
POST /admin/articles(.:format) articles#create
new_article GET /admin/articles/new(.:format) articles#new
edit_article GET /admin/articles/:id/edit(.:format) articles#edit
article GET /admin/articles/:id(.:format) articles#show
PATCH /admin/articles/:id(.:format) articles#update
PUT /admin/articles/:id(.:format) articles#update
DELETE /admin/articles/:id(.:format) articles#destroy
----------------------------------------------------------------------------
concern
concern is a reusable process for rails routing.
concern :commentable do
resources :comments
end
resources :messages, concerns: :commentable
-----------------------------------------------------------------------------------------
Prefix Verb URI Pattern Controller#Action
------ ---- ----------- -----------------
message_comments GET /messages/:message_id/comments comments#index
POST /messages/:message_id/comments comments#create
new_message_comment GET /messages/:message_id/comments/new comments#new
edit_message_comment GET /messages/:message_id/comments/:id/edit comments#edit
message_comment GET /messages/:message_id/comments/:id comments#show
PATCH /messages/:message_id/comments/:id comments#update
PUT /messages/:message_id/comments/:id comments#update
DELETE /messages/:message_id/comments/:id comments#destroy
messages GET /messages messages#index
POST /messages messages#create
new_message GET /messages/new messages#new
edit_message GET /messages/:id/edit messages#edit
message GET /messages/:id messages#show
PATCH /messages/:id messages#update
PUT /messages/:id messages#update
DELETE /messages/:id messages#destroy
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link routes
resources :magazines do
resources :ads
end
<%= link_to 'Ad details', magazine_ad_path(@magazine, @ad) %>
<%= link_to 'Ad details', url_for([@magazine, @ad]) %>
<%= link_to 'Ad details', [@magazine, @ad] %>
<%= link_to 'Magazine details', @magazine %>
<%= link_to 'Edit Ad', [:edit, @magazine, @ad] %>