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パーフェクトRubyonRails備忘録3

Posted at

レンダリング

  • コントローラ内でレンダリングする方法で一番シンプル

    • renderを使う
    class BooksController < ApplicationController
      def show
        # app/views/books/show.html.erbを表示しようとする
        render :show
      end
    
    • renderの場合は省略しても、render アクション名と解釈される。
  • 表示を分ける

    • respond_toを使う
    class BooksController < ApplicationController
      def show
        respond_to do |format|
          # 通常のアクセス GET /books/1
          # render :show, format: :htmlと同じ意味
          format.html
          # jsonを指定してアクセス GET /books/1.json
          # @bookをjson形式に変換して表示
          format.json { render json: @book }
      end
    
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