Django: hiding the primary key (pk) and using DetailView with get_queryset -

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following on thread: django: how hash url database object's primary key?, hide primary keys users , use detailview in urlconf. able accomplish hiding using bitwise xor part (it worked in view functions), until got part had "unmask" masked primary key sent in url subclass of detailview.

how "unmask" pk_masked named group before sending detailviewfilteredonuser(detailview) instance? there way send mask_toggle(pk_unmasked) call detailviewfilteredonuser right in urlconf? in searching solutions, found pk_url_kward in django documentation, couldn't work , anyways don't think can me perform operations on primary key detailview operates on.

here masking function:

def mask_toggle(number_to_mask_or_unmask):     return int(number_to_mask_or_unmask) ^ settings.masking_key

my models "pkgs" contain "items":

class pkg(models.model):     user = models.foreignkey(user, editable=false)     tracking_number = models.charfield(max_length=60, unique=true)  class item(models.model):     pkg = models.foreignkey(pkg)     description = models.charfield(max_length=300)

here in urls.py:

class listviewfilteredonuser(listview):     def get_queryset(self):         return pkg.objects.order_by('-created_at').filter(user=self.request.user)  class detailviewfilteredonuser(detailview):     def get_queryset(self):     qs = super(detailviewfilteredonuser, self).get_queryset()         return qs.filter(user=self.request.user)  ....  url(r'^(?p<pk_masked>\d+)/$',     login_required(detailviewfilteredonuser.as_view( model=pkg,                         template_name='pkgs/detail.html'                         )),      name='detail'),

so problem if named group in urlconf "pk", masked primary key (because masked key in url) sent detailview. if named group in urlconf "pk_masked", need pk=mask_toggle(pk_masked) somewhere, , can't figure out or how this. thanks.

if understood problem correctly, need override get_object (which makes get_queryset pretty irrelevant, can still use clarity). like:

class detailviewfilteredonuser(detailview):     model = pkg     template_name = 'pkgs/detail.html'     def get_queryset(self):         return super(detailviewfilteredonuser, self).get_queryset().filter(user=self.request.user)     def get_object(self):         return self.get_queryset().get(pk=mask_toggle(self.kwargs.get("pk_masked"))

(of course, don't forget catch exceptions, left out clarity , brevity.)


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