module AbstractController::Rendering

def _normalize_args(action = nil, options = {}) # :doc:

:doc:
render :file => "foo/bar".
render :action => "foo" and render "foo/bar" to
Normalize args by converting render "foo" to
def _normalize_args(action = nil, options = {}) # :doc:
  if action.respond_to?(:permitted?)
    if action.permitted?
      action
    else
      raise ArgumentError, "render parameters are not permitted"
    end
  elsif action.is_a?(Hash)
    action
  else
    options
  end
end