サインインまたはサインアップ後に元の場所にリダイレクトするように設定できますか? 質問する

探すのに最適なリソースは、公式リポジトリ/wiki/問題、そして SO です。あなたが見つけた答えは古くなっています。

答えはこうです:https://github.com/plataformatec/devise/wiki/How-To:-Redirect-back-to-current-page-after-sign-in,-sign-out,-sign-up,-update

ApplicationControllerに以下を追加するだけですバージョン 3.2.1 以降の場合:

    # This example assumes that you have setup devise to authenticate a class named User.
class ApplicationController < ActionController::Base
  before_action :store_user_location!, if: :storable_location?
  # The callback which stores the current location must be added before you authenticate the user 
  # as `authenticate_user!` (or whatever your resource is) will halt the filter chain and redirect 
  # before the location can be stored.
  before_action :authenticate_user!

  private
    # Its important that the location is NOT stored if:
    # - The request method is not GET (non idempotent)
    # - The request is handled by a Devise controller such as Devise::SessionsController as that could cause an 
    #    infinite redirect loop.
    # - The request is an Ajax request as this can lead to very unexpected behaviour.
    def storable_location?
      request.get? && is_navigational_format? && !devise_controller? && !request.xhr? 
    end

    def store_user_location!
      # :user is the scope we are authenticating
      store_location_for(:user, request.fullpath)
    end
end

def after_sign_in_path_for(resource_or_scope)
  stored_location_for(resource_or_scope) || super
end