Python 属性错误：'；BoxesView'；对象没有属性'；对象列表'；

试图将表单添加到我的主页视图，并在提交表单时出现此错误。这是我的密码：

视图.py

class BoxesView(ListView, FormMixin):
    template_name = 'polls.html'
    form_class = UserRegistrationForm

    def post(self, request, *args, **kwargs):
        form = self.get_form()
        if form.is_valid():
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            user = User.objects.create_user(username=username, password=password)
            user.save()
            return redirect('/')
        return self.form_invalid(form) 

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

        context['form'] = self.get_form()
        question_list = Question.objects.all().order_by('-date')
        choice = Choice.objects.all()
        context['question_list'] = question_list
        context['choice'] = choice

        q_list = []
        returned_list = []

        for i in question_list:
            q_list.append(i)

        for a, b in CATEGORY_CHOICES:
            name = resolve(self.request.path_info).url_name
            if b == name:
                category = a

        search = self.request.GET.get('search')
        posts = Post.objects.all().filter(category=category).order_by('-date')
        if search:
            posts = posts.filter(
                Q(title__icontains=search) |
                Q(content__icontains=search)
            )        
        else:
            posts = Post.objects.all().filter(category=category).order_by('-date')

        context['posts'] = posts

        total = 0
        for post in posts:
            returned_list.append(post)
            total += 1
            if total == 4:
                total = 0
                for i in q_list:
                    returned_list.append(i)
                    q_list.remove(i)
                    break

        search = self.request.GET.get('search')
        posts = Post.objects.all().filter(category=category).order_by('-date')
        if search:
            posts = posts.filter(
                Q(title__icontains=search) |
                Q(content__icontains=search)
            )
        else:
            posts = Post.objects.all().filter(category=category).order_by('-date')

        context['posts'] = posts

        return context

    def get_queryset(self):
        pass

class UserRegistrationForm(forms.ModelForm):
    password = forms.CharField(widget=forms.PasswordInput)

    class Meta:
        model = User

        fields = [
            'username',
            'password',
        ]

forms.py

class BoxesView(ListView, FormMixin):
    template_name = 'polls.html'
    form_class = UserRegistrationForm

    def post(self, request, *args, **kwargs):
        form = self.get_form()
        if form.is_valid():
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            user = User.objects.create_user(username=username, password=password)
            user.save()
            return redirect('/')
        return self.form_invalid(form) 

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

        context['form'] = self.get_form()
        question_list = Question.objects.all().order_by('-date')
        choice = Choice.objects.all()
        context['question_list'] = question_list
        context['choice'] = choice

        q_list = []
        returned_list = []

        for i in question_list:
            q_list.append(i)

        for a, b in CATEGORY_CHOICES:
            name = resolve(self.request.path_info).url_name
            if b == name:
                category = a

        search = self.request.GET.get('search')
        posts = Post.objects.all().filter(category=category).order_by('-date')
        if search:
            posts = posts.filter(
                Q(title__icontains=search) |
                Q(content__icontains=search)
            )        
        else:
            posts = Post.objects.all().filter(category=category).order_by('-date')

        context['posts'] = posts

        total = 0
        for post in posts:
            returned_list.append(post)
            total += 1
            if total == 4:
                total = 0
                for i in q_list:
                    returned_list.append(i)
                    q_list.remove(i)
                    break

        search = self.request.GET.get('search')
        posts = Post.objects.all().filter(category=category).order_by('-date')
        if search:
            posts = posts.filter(
                Q(title__icontains=search) |
                Q(content__icontains=search)
            )
        else:
            posts = Post.objects.all().filter(category=category).order_by('-date')

        context['posts'] = posts

        return context

    def get_queryset(self):
        pass

class UserRegistrationForm(forms.ModelForm):
    password = forms.CharField(widget=forms.PasswordInput)

    class Meta:
        model = User

        fields = [
            'username',
            'password',
        ]

base.html

<form action="" enctype="multipart/form-data" method="post">{% csrf_token %}
    <div class="registerBox">
        {{ form.username }}
        {{ form.password }}
        <input type="submit" value="register"/>
    </div>
</form>

{%csrf\u令牌%}
{{form.username}
{{form.password}}

---

我的回溯指向以下几行：

return self.form\u invalid（form）

&

context=super（BoxesView，self）。get\u context\u data（）

。希望这可以告诉您问题所在，但我一直无法解决。有什么想法吗？

如果您使用的是ListView，您应该

使用

class BoxesView(ListView, FormMixin):
    template_name = 'polls.html'
    model = yourModel

或者您应该在get_queryset方法中指定queryset

def get_queryset(self):
    qs = yourModel.objects.all()
    return qs

请注意，
queryset在模板中通过默认名称对象列表进行访问

另外，不要在ListView中使用表单创建对象，而应尝试仅在ListView中列出对象<代码>使用CreateView创建对象

。您的ListView可能如下所示

class BoxesView(ListView):
    template_name = 'polls.html'
    model = yourModel
    paginate_by = 20

有关更多详细信息，请参阅

---

另外，从您的问题来看，您似乎试图迭代作为上下文数据传递给模板的Post对象。请注意，

重写def get_context_data（self）是为了提供额外的上下文变量，而不是queryset和ListView始终希望在从ListView继承的类中定义model或get_queryset（self）。如果您试图为Post对象创建ListView，请尝试在类中设置
model=Post
 我管理一个解决方案，如果类中没有
user\u list
变量，则必须将其放入，但最好重写构造函数，但必须将模型变量放入类中

class BoxesView(ListView, FormMixin):
    template_name = 'polls.html'
    form_class = UserRegistrationForm
    model = YourModel

    def __init__(self, *args, **kwargs):
        super(BoxesView, self).__init__(*args, **kwargs)
        self.object_list = self.get_queryset()

它很有用：p
当我已经将queryset作为上下文传递时，为什么需要指定get_queryset（）？（
context['posts']=posts
）。另外，当您说使用CreateView创建对象时，您的意思是创建我的表单吗？所以不要在我的ListView中包含表单？我刚才添加了：
qs=yourModel.objects.all（）将qs
返回给我的get\u queryset（）方法，我得到了相同的错误。我使用
get\u context\u data（）的原因是
返回查询集是因为我实际上并不是只返回查询集，而是返回一个由2个查询集组成的列表（Post&Question）。因此，我应该像现在一样在
get\u context\u data（）
中构建这个列表，还是应该在
get\u queryset（）
中构建它？是的，所以我现在已经这样做了-但是我仍然得到原始的
属性错误：“BoxesView”对象没有属性“object\u list”
。你知道如何解决这个问题吗？试着在你的类中指定model，或者试着重写
get\u queryset（self）
，然后从get\u queryset返回model对象。我意识到当我提交表单时，object\u列表会返回对象。all（）expring第一个元素，你知道为什么吗？