设计current_user在可安装引擎中不起作用

Question

Following How To: Use devise inside a mountable engine and I can't get any of the Devise helper methods to show.

The Engine I'm using is People . (See my full repo )

module People
  class ApplicationController < ActionController::Base
    current_user
  end
end

Returns undefined local variable or method 'current_user' for People::ApplicationController:Class

I've tried the following

• require 'devise' at top of People::ApplicationController
• require 'devise' in host's application.rb
• Calling main_app.current_user
• Calling People::User.current_user
• Adding helper People::Engine.helpers (per this SO suggestion )

And, neither are sessions

Not sure if it's related, but when I pry into ApplicationController and type

# Pry Session
  session[:foo]
  => NameError: undefined local variable or method `session' for People::ApplicationController:Class

Additional Context, Devise is installed

I'm able to create Users.

# Pry Session
  People::User
  => People::User(id: integer, email: string, encrypted_password: string, reset_password_token: string, reset_password_sent_at: datetime, remember_created_at: datetime, sign_in_count: integer, current_sign_in_at: datetime, last_sign_in_at: datetime, current_sign_in_ip: string, last_sign_in_ip: string, created_at: datetime, updated_at: datetime)

Answer 1

The issue here is because you're attempting to access the instance method, current_user , in the class context and not the instance context. If you referred to the method inside an action in a controller, it should work.