Django Class视图未返回HttpResponse对象。它返回None - python

urls.py

from housepost.views import ListingPost
...
url(r'^house_post/$', ListingPost.as_view(), name='post_house'),
...

views.py

from django.http import HttpResponse
from django.contrib import messages
from django.views.generic import View
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator

class ListingPost(View):

    def get(self, request, *args, **kwargs):
        messages.error(request, 'asdf', extra_tags = 'error')
        return HttpResponse('Hi')

    @method_decorator(login_required)
    def dispatch(self, *args, **kwargs):
        super(ListingPost, self).dispatch(*args, **kwargs)

我在get请求上返回HttpResponse,但我不断收到错误消息:

错误信息

视图housepost.views.ListingPost没有返回HttpResponse对象。它返回None。

我要去哪里错了?

python大神给出的解决方案

dispatch返回HttpResponse,但是覆盖它时不返回任何内容。这是调用getpost并代表它们返回响应的方法。因此,以下应该工作:

def dispatch(self, *args, **kwargs):
    return super(ListingPost, self).dispatch(*args, **kwargs)