Python 我正在django中使用CreateView，但出现错误-查看blog.views.PostCreateView没有'；t返回HttpResponse对象。它没有返回任何结果

我有一个post模型，其中一个用户与用于身份验证的内置用户模型具有OneToMany关系

我的URL.py

from django.contrib import admin
from django.urls import path, include
# from views import PostView
from . import views

urlpatterns = [
    path('', views.PostView.as_view(), name='blogHome'),
    path('post/<int:pk>/', views.PostDetailView.as_view(), name='post-detail'),
    path('post/new/', views.PostCreateView.as_view(), name='post-create'),
    path('about/', views.about, name='about')
]

from django.shortcuts import render
from django.http import HttpResponse
from .models import Post
from django.views.generic import (
    ListView, 
    DetailView, 
    CreateView
)
# Create your views here.


def home(request):
    context = {
        'posts': Post.objects.all()
    }
    return render(request, 'blog/home.html', context)

def about(request):
    return render(request, 'blog/about.html')

class PostView(ListView):
    model = Post
    template_name = 'blog/home.html'
    context_object_name = 'posts'
    ordering = ['-date_published']

class PostDetailView(DetailView):
    model = Post

class PostCreateView(CreateView):
    model = Post
    fields = ['title', 'body']

    #to add author before validation
    def form_valid(self, form):
        form.instance.author = self.request.user
        return super().form_valid(form)
 

后期模型

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User

# Create your models here.
class Post(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=100)
    body = models.TextField()
    date_published = models.DateTimeField(default=timezone.now)

    def __str__(self):
        return self.title

{% extends 'blog/layout.html' %} 
{% load crispy_forms_tags %}
{% block body %}
<div class="content-section p-20">
  <form method="POST">
    {% csrf_token %}
    <fieldset class="form-group p-30">
      <legend class="border-bottom mb-4">Create new post</legend>
      {{ form|crispy }}
    </fieldset>
    <div class="form-group">
      <button class="btn btn-outline-info" type="submit">Create</button>
    </div>
  </form>
</div>
{% endblock  %}

我使用post_form.html作为模板名

post_form.html

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User

# Create your models here.
class Post(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=100)
    body = models.TextField()
    date_published = models.DateTimeField(default=timezone.now)

    def __str__(self):
        return self.title

{% extends 'blog/layout.html' %} 
{% load crispy_forms_tags %}
{% block body %}
<div class="content-section p-20">
  <form method="POST">
    {% csrf_token %}
    <fieldset class="form-group p-30">
      <legend class="border-bottom mb-4">Create new post</legend>
      {{ form|crispy }}
    </fieldset>
    <div class="form-group">
      <button class="btn btn-outline-info" type="submit">Create</button>
    </div>
  </form>
</div>
{% endblock  %}

{%extends'blog/layout.html%}
{%load crispy_forms_tags%}
{%block body%}
{%csrf_令牌%}
创建新帖子
{{form | crispy}}
创造
{%endblock%}

---

我是Django的初学者，请告诉我是否需要更多的东西来解决这个问题。这也是为什么这种类型的错误只出现在Createview中而不出现在其他视图中的原因

显然是

super（）的返回。form\u valid（form）

是

None

并且不是有效的响应。我对Django中的这种设计模式不太了解，但看到其他方法，这个视图似乎被某个返回有效响应的方法修饰过。因此，您不应该在实现中返回某些内容。因此，放下

返回键

，然后再次测试