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[Ruby] 詳細ページなどに直接URLを入力されても他のページに遷移させる方法

Posted at

初めての投稿なのでアドバイスあればよろしくお願いいたします!

フリマアプリ作成中、詳細ページまで作成してふと、
「これって直接詳細ページ飛べちゃうやん?」
と思い調べて自分なりにまとめてみました。

items_controller.rb
class ItemsController < ApplicationController
  
  before_action :set_item, only: [:show, :edit]
   
   def edit
#重要なのはここから@itemは、before_actionからきてます
    if @item.user == current_user
#current_userは、ログインしているユーザーのこと
#@item.userは、@itemに入ってるuserを出してます
      render "edit"
    else
#もし等しくなければ、redirect_toでroot_path(ホーム画面に戻っています)
      redirect_to root_path
    end

private

  def set_item
    @item = Item.find(params[:id])
  end

  def item_params
    params.require(:item)
          .permit(:image, :name, :explanation, :category_id, :item_status_id,
                  :shipping_fee_status_id, :area_id, :scheduled_delivery_id, :price).merge(user_id: current_user.id)
  end
end
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