Named routes in mounted rails engine

Question

I\'m making a small rails engine which I mount like this:

mount BasicApp::Engine => \"/app\"

Using this answer I have verified that all

Answer 1

On Rails 4 the engine_name directive did not work for me.
To access a named route defined in engine's routes from engine's own view or controller, I ended up using the verbose

BasicApp::Engine.routes.url_helpers.new_post_path

I recommend defining a simple helper method to make this more usable

# in /helpers/basic_app/application_helper.rb

module BasicApp::ApplicationHelper
  def basic_app_engine
    @@basic_app_engine_url_helpers ||= BasicApp::Engine.routes.url_helpers
  end
end

With this in place you can now use

basic_app_engine.new_post_path

In case you need to access your main application helper from the engine you can just use main_app:

main_app.root_path