Question

I want my doorkeeper views to use the application layout:

https://github.com/applicake/doorkeeper/wiki/Customizing-views

This contains routes and helper methods from the main application.

For the routes, I can prefix main_app to the path but for the helper method I get the following error:

undefined method `is_active?' for #<ActionDispatch::Routing::RoutesProxy:0xade808c>

<li class="<%= main_app.is_active?("high_voltage/pages", "api") %>"><%= link_to t('developers'), page_path('api') %></li>

Why is this? The helper is in app/helpers/application_helper.rb

Answer 1

If you generated the views and they are placed in app/views/doorkeeper/** then the engine still uses doorkeeper controllers.

To fix this, you have to include your helper(s) into the engine’s ApplicationController. Let’s say you have something like this:

app/helpers/application_helper.rb

module ApplicationHelper
  def my_helper
    "hello"
  end
end

app/views/doorkeeper/applications/index.html.erb

<p>
  <%= my_helper %>
</p>

This won’t work until you include your application helpers into doorkeeper controllers. So in config/application.rb:

class YourApp::Application < Rails::Application
  config.to_prepare do
    # include only the ApplicationHelper module
    Doorkeeper::ApplicationController.helper ApplicationHelper

    # include all helpers from your application
    Doorkeeper::ApplicationController.helper YourApp::Application.helpers
  end
end

this is similar configuration when you want to customize the layout.