script to determine all controllers in challengepost

routes.rb

def add_controllers(routes, all_controllers)
  routes.each do |route|
    requirements = route.requirements
    controller_name = requirements[:controller]
    action = requirements[:action]
    if controller_name
      all_controllers << "#{controller_name.camelize}Controller##{action}"
    end
  end
end

all_controllers=Set.new
[ Admin::Engine.routes,
  Challenges::Engine.routes,
  Home::Engine.routes,
  Devise::Engine.routes,
  Groups::Engine.routes,
  Rails.application.routes].each do |route_map|
  add_controllers(route_map.routes, all_controllers)
end


all_controllers.each do |c|
  puts c
end