雖然，大大說這是一個 Design decision

也說行為不會改變

https://code.djangoproject.com/ticket/10768

http://stackoverflow.com/questions/4500924/django-admin-action-without-selecting-objects

有些時候，想簡單的整合在一起，還是要找一些洞來繞
https://github.com/django/django/blob/master/django/contrib/admin/options.py#L856

純筆記