Could I share the Rails Engine namespace with the Main Application?

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I have an main app and a rails engine, and now I've created Views and Controllers for a Model that exists inside the rails engine.

My rake routes results is:

[bruno@chp main-app]$ rake routes 
                                                                   notificationss        /notificationss                  notificationss::Engine
 notificationss_messages    GET    /notifications/messages(.:format)  notificationss/messages#index
                          POST   /notifications/messages(.:format)  notificationss/messages#create
 new_notifications_message GET    /notifications/messages/new(.:format)                                           notifications/messages#new
edit_notifications_message GET    /notifications/messages/:id/edit(.:format)                                      notifications/messages#edit
  notifications_message    GET    /notifications/messages/:id(.:format)                                           notifications/messages#show
                          PATCH  /notifications/messages/:id(.:format)                                           notifications/messages#update
                          PUT    /notifications/messages/:id(.:format)                                           notifications/messages#update
                          DELETE /notifications/messages/:id(.:format)                                          notifications/messages#destroy

But I can't use the same namespace engine to declare the routes, and it if I do this, I got many errors:

1) Notifications::MessagesController GET #index assigns all the messages as @messages
     Failure/Error: get :index
     ActionView::Template::Error:
       undefined local variable or method `new_notifications_message_url' for #<#<Class:0x00000005ad9120>:0x00000005ac2a88>
     # ./app/views/notifications/messages/index.html.slim:5:in `_app_views_notifications_messages_index_html_slim__2090168882652255551_47327940'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/actionview-4.2.0/lib/action_view/template.rb:145:in `block in render'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.0/lib/active_support/notifications.rb:164:in `block in instrument'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.0/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.0/lib/active_support/notifications.rb:164:in `instrument'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/actionview-4.2.0/lib/action_view/template.rb:333:in `instrument'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/actionview-4.2.0/lib/action_view/template.rb:143:in `render'
     # /home/bruno/.rvm/gems/ruby-2.2.1/gems/actionview-4.2.0/lib/action_view/renderer/template_renderer.rb:54:in `block (2 levels) in render_template'

Controller Test:

RSpec.describe Notifications::MessagesController, type: :controller do
    render_views

    let(:valid_attributes) { attributes_for :notifications_message }
    let(:invalid_attributes) { attributes_for :invalid_notifications_message }

    describe 'GET #index' do
      it 'assigns all the messages as @messages' do
        message = create :notifications_message, valid_attributes

        get :index

        expect(assigns(:messages)).to include(message)
      end

      it 'success if path exists' do
        get :index

        expect(response).to have_http_status(:success)
      end
    end
   #... omitted
 end

My Controller:

class Notifications::MessagesController < ApplicationController
  before_action :set_message, only: [:edit, :update, :show, :destroy]

  def index
    @messages = Notifications::Message.all
    respond_with(@messages)
  end
  #... omitted
end

If I change to any other name instead of 'notifications', It works. How I can share this namespace?!

asked 1 min ago

Bruno Casali

288

Could I share the Rails Engine namespace with the Main Application?