def get_object(self):
"""
Returns the object the view is displaying.
You may want to override this if you need to provide non-standard
queryset lookups. Eg if objects are referenced using multiple
keyword arguments in the url conf.
"""
queryset = self.filter_queryset(self.get_queryset())
# Perform the lookup filtering.
lookup_url_kwarg = self.lookup_url_kwarg or self.lookup_field
assert lookup_url_kwarg in self.kwargs, (
'Expected view %s to be called with a URL keyword argument '
'named "%s". Fix your URL conf, or set the `.lookup_field` '
'attribute on the view correctly.' %
(self.__class__.__name__, lookup_url_kwarg)
)
try:
obj = queryset.get(**{self.lookup_field: self.kwargs[lookup_url_kwarg]})
except (ObjectDoesNotExist, ValidationError, TypeError, ValueError):
obj = get_object_or_404(queryset, nb_id=self.kwargs[lookup_url_kwarg])
# May raise a permission denied
self.check_object_permissions(self.request, obj)
return obj
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