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Railsで遷移元のcontroller、action名などを取得する方法とエラー対応

Last updated at Posted at 2018-08-14

#はじめに

Railsで遷移元(直前)のcontrollerやaction名を取得するやり方について説明する。また、途中でエラーのため詰まった部分があったので、その時の対処法も記しておく。

#やり方

controller
path = Rails.application.routes.recognize_path(request.referer)

これだけです。
個別にcontrollerやactionを呼び出したいときは以下。

controller
#controllerを取得
path[:controller]

#actionを取得
path[:action]

#エラー対応
No route matchesというエラーが発生。

controller
before_uri = URI.parse(request.referer)
path = Rails.application.routes.recognize_path(before_uri.path)

これで解決した。

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