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【Rails】redirect_toで変数やflashを渡す

Last updated at Posted at 2020-01-10

redirect_toでページ遷移する先に、変数やflashを引き渡す方法がわかったのでメモ。

##変数
###送る側

redirect_to hoge_url(user_id: @customer.id)

###受け取る側

user_id = params[:user_id]

##flash
###alert, notice

redirect_to hoge_url, alert: 'エラーが発生しました'
redirect_to hoge_url, notice: '登録しました'

###それ以外

redirect_to hoge_url, flash: { key: 'message' }
redirect_to hoge_url, flash: { info: 'メールを送信しました' }

おまけ

以下のような書き方もできる

redirect_to '/user/show'

##参考
flashを使って簡易メッセージを表示する

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