ActionController::Metal Necessary Modules

metal_controller.rb

class MetalController < ActionController::Metal
  include AbstractController::Rendering
  include ActionView::Layouts
  include ActionController::Serialization
  include ActionController::Rendering
  include ActionController::Renderers::All
  include ActionController::Redirecting
  include AbstractController::Callbacks
  include AbstractController::Helpers
  include ActionController::ParamsWrapper
  include ActionController::MimeResponds
  include ActionController::ImplicitRender
  include ActionController::ForceSSL
  include ActionController::Instrumentation
  include ActionController::RequestForgeryProtection
  include ActionController::StrongParameters
  include ActionController::Rescue
  include ActionController::HttpAuthentication::Token::ControllerMethods
  include Rails.application.routes.url_helpers
  
  # If you use Devise, uncomment the next line
  # include Devise::Controllers::Helpers
end

This is by no means the official list. These are just all the modules I have had to use to get ActionController::Metal to meet my needs.

Feel free to contribute and improve this list!