Python 非空约束失败：新建\u PFNews\u PFNews.Auther\u id

我研究了大量关于堆栈溢出的问题，但没有一个解决方案对我有帮助。我尝试了null=True和blank=True以及default=None，它们都给出了错误。有人有什么想法吗？非常感谢！我得到的错误是： 1-当我从（前端）创建新帖子时，它会给出空帖子（没有标题、内容和作者） 2-当我从后端创建时，它工作正常。 3-当我试图删除null=True或blank=True或两者中的任何一个时，会出现以下错误：

非空约束失败：新建\u PFNews\u PFNews.Auther\u id

型号.py

class PFNews (models.Model):
Title = models.CharField(max_length=200)
Content = models.TextField()
Post_Date = models.DateTimeField(default=timezone.now)
Post_Update = models.DateTimeField(auto_now=True)
Auther = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True)

def __str__(self):
    return self.Title

def get_absolute_url(self):
    # return '/detail/{}'.format(self.pk)
    return reverse('pfnewsdetails', args=[self.pk])
class Meta:
    ordering = ('-Post_Date',)

class PostCreateView(LoginRequiredMixin, CreateView):
model = PFNews
# fields = ['title', 'content']
template_name = 'PFNews/new_post.html'
form_class = PostCreateForm

def form_valid(self, form_class):
    form_class.instance.author = self.request.user
    return super().form_valid(form_class)

urlpatterns = [
path('', home, name='home'),
path('about/', aboutus, name='about'),
path('newsdetail/<int:pfnews_id>/', pfnews_detail, name='pfnewsdetails'),
path('new_post/', PostCreateView.as_view(), name='new_post'),
path('detail/<slug:pk>/update/', PostUpdateView.as_view(), name='post-update'),
path('detail/<slug:pk>/delete/', PostDeleteView.as_view(), name='post-delete'),]

视图.py

class PFNews (models.Model):
Title = models.CharField(max_length=200)
Content = models.TextField()
Post_Date = models.DateTimeField(default=timezone.now)
Post_Update = models.DateTimeField(auto_now=True)
Auther = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True)

def __str__(self):
    return self.Title

def get_absolute_url(self):
    # return '/detail/{}'.format(self.pk)
    return reverse('pfnewsdetails', args=[self.pk])
class Meta:
    ordering = ('-Post_Date',)

class PostCreateView(LoginRequiredMixin, CreateView):
model = PFNews
# fields = ['title', 'content']
template_name = 'PFNews/new_post.html'
form_class = PostCreateForm

def form_valid(self, form_class):
    form_class.instance.author = self.request.user
    return super().form_valid(form_class)

urlpatterns = [
path('', home, name='home'),
path('about/', aboutus, name='about'),
path('newsdetail/<int:pfnews_id>/', pfnews_detail, name='pfnewsdetails'),
path('new_post/', PostCreateView.as_view(), name='new_post'),
path('detail/<slug:pk>/update/', PostUpdateView.as_view(), name='post-update'),
path('detail/<slug:pk>/delete/', PostDeleteView.as_view(), name='post-delete'),]

url.py

class PFNews (models.Model):
Title = models.CharField(max_length=200)
Content = models.TextField()
Post_Date = models.DateTimeField(default=timezone.now)
Post_Update = models.DateTimeField(auto_now=True)
Auther = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True)

def __str__(self):
    return self.Title

def get_absolute_url(self):
    # return '/detail/{}'.format(self.pk)
    return reverse('pfnewsdetails', args=[self.pk])
class Meta:
    ordering = ('-Post_Date',)

class PostCreateView(LoginRequiredMixin, CreateView):
model = PFNews
# fields = ['title', 'content']
template_name = 'PFNews/new_post.html'
form_class = PostCreateForm

def form_valid(self, form_class):
    form_class.instance.author = self.request.user
    return super().form_valid(form_class)

urlpatterns = [
path('', home, name='home'),
path('about/', aboutus, name='about'),
path('newsdetail/<int:pfnews_id>/', pfnews_detail, name='pfnewsdetails'),
path('new_post/', PostCreateView.as_view(), name='new_post'),
path('detail/<slug:pk>/update/', PostUpdateView.as_view(), name='post-update'),
path('detail/<slug:pk>/delete/', PostDeleteView.as_view(), name='post-delete'),]

urlpatterns=[
路径（“”，home，name='home'），
路径（'about/'，aboutus，name='about'），
路径（'newsdail/'，pfnews_detail，name='pfnewsdails'），
路径（'new_post/'，PostCreateView.as_view（），name='new_post'），
路径（'detail//update/'，PostUpdateView.as_view（），name='post-update'），
路径（'detail//delete/'，PostDeleteView.as_view（），name='post-delete'），]

在views.py中

form_class.instance.author=self.request.user

---

在您的models.py中没有小写的实例作者。。。现在检查拼写，了解makemigrations运行良好的问题，但migrate未运行，并给出了相同的错误，通过删除数据库并重新创建新数据库解决了此问题。。但它是创建空帖子（没有标题，没有内容，没有作者）