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Model-View-Contoroller(MVC)メモ

Last updated at Posted at 2022-01-07

#アクション名とアプリケーションネームは同じ名前にする
していないとプレビューで
The action 'hello' could not be found for ApplicationController
と表示される。

application_controller.rb
class ApplicationController < ActionController::Base

  def hello #ここ
    render html: "hello, world!"
  end
end
routes.rb
Rails.application.routes.draw do
  # For details on the DSL available within this file,
  # see https://guides.rubyonrails.org/routing.html
  root 'application#hello' #ここ
end

これによってapplication_controllerのhelloアクションにルーティングされる。

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