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【Rails】ルーティングについて

Posted at

はじめに

ルーティングについて学習した内容をまとめました。

ルーティングとは

ルーティングとは、HTTPリクエストとURLを元に、どのコントローラーのどのアクションを実行するか結びつけること。

rootで作成

rootとはドメイン名の後ろに何もついていないトップページのこと。

app/config/routes.rb
root to: 'articles#index’

GET,POST,PATCH,DELETEで作成

各アクションに対して個別でルーティングを指定。

ただし、記述内容が多くなりミスが起きやすくなる。

app/config/routes.rb
Rails.application.routes.draw do
	post "articles"         => "articles#create"   
  get "articles/new"      => "articles#new"   
  get "articles/:id/edit" => "articles#edit"   
  get "articles/:id"      => "articles#show"   
  patch "articles/:id"    => "articles#update"   
  delete "articles/:id"   => "articles#destroy"
end

resourcesで作成

resourcesメソッドでルーティングを作成すると、WebアプリケーションのCRUD機能を実装するために必要なルーティングを全て作成することができる

app/config/routes.rb
resources :articles
$rake routes

     articles GET /articles(.:format)          articles#index 
              POST /articles(.:format)         articles#create 
 new_articles GET /articles/new(.:format)      articles#new 
edit_articles GET /articles/:id/edit(.:format) articles#edit 
     articles GET /articles/:id(.:format)      articles#show 
              PATCH /articles/:id(.:format)    articles#update 
              PUT /articles/:id(.:format)      articles#update 
              DELETE /articles/:id(.:format)   articles#destroy

resourceで作成

resourcesメソッドと異なる点は

 ・indexが定義されない

 ・Pathにidがない

app/config/routes.rb
resource :profile
$rake routes

  new_profile   GET    /profile/new(.:format)   profile#new
 edit_profile   GET    /profile/edit(.:format)  profile#edit
      profile   GET    /profile(.:format)       profile#show
                PATCH  /profile(.:format)       profile#update
                PUT    /profile(.:format)       profile#update
                DELETE /profile(.:format)       profile#destroy
                POST   /profile(.:format)       profile#create
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