CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4deviserails-engines
user2158316
user2158316

Reputation:

Rails app not finding Devise functions when mounted from Engine

I'm building an Rails Engine to handle all the authentication and authorization across multiple applications. All these application are using Devise atm for their authentication. I want to move this into an engine which then can be mounted in all these applications so that they automatically have all devise functionality.

I followed all the steps from the "Devise in an engine" guide on the devise wiki. The problem i'm running in to is that i can't use functions like 'current_user' and 'new_user_session_path' in the controllers of my main applications.

The error i'm getting in the main application is:

Showing .../main_app/app/views/shared/_header.haml where line #19 raised:
undefined local variable or method `new_user_session_path' for #<#<Class:0x007f1578968040>:0x007f157897b348>

= link_to t('user.login'), new_user_session_path

The engine does not have an isolate_namespace. I added Devise as a dependency in the engine.gemspec file and removed Devise from the Gemfile in the main application. The engine is mounted in the main application as: 

mount Engine::Engine, at: 'idms'

In the routes of the engine i have devise configuered as:

devise_for :users, {
  class_name: "IdmsGem::User",
  module: :devise
  controllers: { sessions: "devise/sessions" }
}

The initializers/devise.rb file is as followed:

require 'devise/orm/active_record'

Devise.setup do |config|
  config.router_name = '/idms_gem'
end

The user model in the engine:

module Engine
  class User < ActiveRecord::Base
    devise :database_authenticatable
    self.table_name = "users"
  end
end

Im using Rails 4.2.1 with Devise 3.5.1 on Ruby 2.2.2.

My question is, how can i let my controllers and views in my main applications access functions from devise that is configured in my engine?

Any help is welcome! I have been googling and trying every thing for the last couple of days now. Thanks every one!

EDIT: Rake routes gives the following output:

Prefix Verb   URI Pattern                                Controller#Action
idms_gem        /idms                                      IdmsGem::Engine

{AND THE REST OF MY MAIN APP ROUTES...}

Routes for IdmsGem::Engine:
    new_user_session GET    /users/sign_in(.:format)  devise/sessions#new
        user_session POST   /users/sign_in(.:format)  devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
                root GET    /                         devise/sessions#new

Upvotes: 5

Views: 787

Answers (1)

j-dexx
j-dexx

Reputation: 10416

You need to link to the engine's path. This will try and go to the application's path

link_to t('user.login'), new_user_session_path

So change it to (I think this is right)

link_to t('user.login'), IdmsGem.new_user_session_path

Upvotes: 1

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