Django - how to create a private subpage?

I am trying to do a private subpage for every user which will be accessed trough url:
    url(r'^galeria/$', 'publisher.views.private_gallery'),

I was trying to create a query set for private gallery by using a signal: user_logged_in

p = Publisher.objects.filter(status='p', pub_type='private_gallery', user_gallery=str(user_logged_in)).order_by('-id')

However, django does not accept signals in querysets.
Could you give me some good hints on making private pages which can be viewed only by Users?

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