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

        context['page'] = 'forum'
        context['user'] = self.request.user

        return context

def get_queryset(self):
    directory = Directory.objects.filter(pk=self.kwargs['directory_id'])
    topics = directory.first().topic_set.all().order_by('-last_post')
    return topics

仅在您的ListView中使用此功能，因为Django为所有基于类的视图提供了分页功能

use this only in your ListView, as Django provides pagination to all the Class Based View