python类MultipleObjectMixin()的实例源码

def get_context_data(self, **kwargs):
        history = self.page_user.content_set.public().prefetch_related(
            "author__reputation", "items")
        fwers_ids = Follow.objects.get_follows(
            self.page_user).values_list("user_id", flat=True)
        obj_fwed = Follow.objects.filter(user=self.page_user)
        fwees_ids = obj_fwed.values_list("target_user_id", flat=True)
        items_fwed_ids = obj_fwed.values_list("target_item_id", flat=True)

        empty_msg = _("%(page_user_display)s have not contributed yet.") % {
            "page_user_display": user_display(self.page_user)
        }

        context = super(ProfileDetailView, self).get_context_data(**kwargs)
        followers = User.objects.filter(pk__in=fwers_ids)
        followees = User.objects.filter(pk__in=fwees_ids)
        scores, votes = history.get_scores_and_votes(self.request.user, True)
        context.update({
            "empty_msg": empty_msg,
            "reputation": self.page_user.reputation,
            "fwers": followers.order_by("-reputation__reputation_incremented"),
            "fwees": followees.order_by("-reputation__reputation_incremented"),
            "items_fwed": Item.objects.filter(pk__in=items_fwed_ids),
            "scores": scores,
            "votes": votes,
        })

        # Next step would be to be able to "merge" the get_context_data of both
        # DetailView (SingleObjectMixin) and MultipleObjectMixin
        m = MultipleObjectMixin()
        m.request = self.request
        m.kwargs = self.kwargs
        m.paginate_by = self.paginate_by

        history = history.select_subclasses()
        context.update(m.get_context_data(object_list=history))

        return context