controller_class_for

# File actionpack/lib/action_dispatch/http/request.rb, line 81
    def controller_class_for(name)
      if name
        controller_param = name.underscore
        const_name = "#{controller_param.camelize}Controller"
        ActiveSupport::Dependencies.constantize(const_name)
      else
        PASS_NOT_FOUND
      end
    end