unnecessary loading parent resource with :shallow => true

[virvit]

Hello.

I've simple controller
class ChildsController < ApplicationController
load_and_authorize_resource :parent
load_and_authorize_resource :child, :through => :parent, :shallow => true

As far as I understand we don't need parent object with shallow option/route in show/update/destroy actions. But these lines will load it everytime (parent object). So when I call ChildsController#show with id = 1 it always looks for params[:parent_id] and fails to find it (so action doesn't execute further).

Is there a way to avoid looking for parent objects with shallow option without explicit declaration :except => [:show, :update, :destroy] for parent object?

Thank you for your job!