Marginalia

Marginalia.rb

module Marginalia
  module Comment
    def self.request_id
      RequestHeadersMiddleware.store[:'X-Request-Id'] if   RequestHeadersMiddleware
    end
  end
end
Marginalia::Comment.components = [
                               :application,
                               :controller_with_namespace,
                               :action,
                               :request_id,
                              ]