views.py 文件源码

def get_context_data(self, **kwargs):
        context = super(ListView, self).get_context_data(**kwargs)
        context['total_criteria'] = Criterion.objects.count()
        context['group_form'] = GroupForm(data=self.request.GET)

        group_id = self.request.GET.get('group')
        if group_id:
            try:
                group_id = int(group_id)
            except (ValueError, TypeError):
                pass
            else:
                context['group'] = get_object_or_404(Group, pk=self.request.GET['group'])

        return context