routes_cleaner.rake

namespace :routes do
  task :check => [:environment] do
    STANDARD_METHODS = %w(index new create show edit update destroy)
    SUPPORT_CONTROLLERS = [ "ApplicationController", /BaseController$/]
    unexisted_controllers = []
    unexisted_actions = []
    bound_controllers = []
    ActionController::Routing::Routes.routes.each do |route| 
      controller_path = route.requirements[:controller]
      if controller_path
        bound_controllers << controller_path
        action_name = route.requirements[:action]
        controller_name = controller_path.camelize + "Controller"
        begin
          controller_class = controller_name.constantize
          unless controller_class.public_instance_methods.include?(action_name) || STANDARD_METHODS.include?(action_name)
            unexisted_actions << "#{route.requirements.inspect}: #{controller_name} don't have public method :#{action_name}"
          end
        rescue NameError => error
          unexisted_controllers << "#{controller_path}: #{error}"
        end
      end
    end
    puts "Unbound controllers:"
    ActionController::Base.subclasses.each do |controller|
      routing_name = controller.underscore.sub(/_controller$/, "")
      unless bound_controllers.include?(routing_name) 
        SUPPORT_CONTROLLERS.each do |matcher|
          unless matcher.match(routing_name)
            puts "\t#{controller}: Not present in routes"
          end
        end
      end
    end
    puts "Unexisted controllers:"
    unexisted_controllers.uniq.each do |error|
      puts "\t#{error}"
    end
    puts "Unexisted actions:"
    unexisted_actions.uniq.each do |error|
      puts "\t#{error}"
    end
 
  end
end