quick fix for #11

[olivierdalang]

I didn't put lots of thoughts there ;)

IMO we could think of removing qr_from_object altogether, since not every user defines the absolute urls in the same way...

Bests,

Olivier

[pablorecio]

I agree that's broken, and using django.contrib.site is quite a bad hack (apologies, this is a very old project), but moving the import doesn't fix the issue.

Maybe using context['request'] is a better fix? That will mean to enforce the 'django.template.context_processors.request' context processor, but surely that's better.