python - 尝试连接 ModelForm

Question

我收到“值错误”因为“ModelForm 没有指定模型类。”

我尝试检查:models.py forms.py 和views.py，但对我来说一切看起来都很好

views.py:

class CreatePostView(LoginRequiredMixin,CreateView):
   login_url='/login/'
   redirect_field_name='Myblog/post_detail.html'
   form_class = PostForm
   model = Post

模型.py:

class Post(models.Model):
   author = models.ForeignKey('auth.User',on_delete=models.CASCADE)
   title = models.CharField(max_length=200)
   text = models.TextField()
   created_date = models.DateTimeField(default=timezone.now)
   published_date = models.DateTimeField(blank=True,null=True)

表单.py:

class PostForm(ModelForm):
   class meta:
       model = Post
       fields = ('author','title','text')

来自 app.urls.pyurl(r'^post/new/$',views.CreatePostView.as_view(),name='post_new'),

Answer 1

<b>M</b>eta 是大写，根据 PEP-8类名全部以大写字母开头。在你的表格中，你应该写:

# app/forms.py

class PostForm(ModelForm):

    class <b>Meta</b>:
        model = Post
        fields = ('author','title','text')

既然你把它写成<s>meta</s> ，Django确实没听懂什么model你正在使用。

但是，如果您不编写包含特定项目的表单，您可以 - 例如 @DanielRoseman说，只需将其定义在 CreateView [Django-doc] :

class CreatePostView(LoginRequiredMixin,CreateView):
    login_url='/login/'
    redirect_field_name='Myblog/post_detail.html'
    model = Post
    <b>fields = ('author', 'title', 'text')</b>

Django可以通过 modelform_factory [Django-doc]构造表单类.