python类UpdateView()的实例源码

def dispatch(self, request, *args, **kwargs):
        slug = self.kwargs.get('topic_slug', '')
        topic = get_object_or_404(Topic, slug = slug)

        if not has_subject_permissions(request.user, topic.subject):
            return redirect(reverse_lazy('subjects:home'))

        return super(UpdateView, self).dispatch(request, *args, **kwargs)

def get_context_data(self, **kwargs):
        context = super(UpdateView, self).get_context_data(**kwargs)

        context['title'] = _('Update Topic Goals')

        slug = self.kwargs.get('topic_slug', '')
        topic = get_object_or_404(Topic, slug = slug)

        context['topic'] = topic
        context['subject'] = topic.subject

        return context