AttributeError：'BoxesView'對象沒有任何屬性'object_list'

Question

嘗試將表單添加到我的主頁視圖並在提交表單時出現此錯誤。這裏是我的代碼：

views.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 

forms.py

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

    class Meta: 
     model = User 

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

base.html文件

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

我回溯正在將我指向這些行：return self.form_invalid(form) & context = super(BoxesView, self).get_context_data()。希望這可以給你一個什麼問題的跡象，但我一直無法解決它。任何想法？

Answer 1

如果您正在使用ListView控件，要麼你應該specify a model attribute與

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

還是應該指定get_queryset方法查詢集。

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

請注意，queryset is accessed in templates by the default name object_list。

而不是在ListView中使用窗體創建對象，只能嘗試列出ListView中的對象。 Use CreateView to create objects。您的ListView可能如下所示。

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

參考this link更多細節

而且從你的問題好像你正試圖遍歷被傳遞到模板上下文數據發佈對象。請注意，Overriding def get_context_data(self) is to provide extra context variables，而不是queryset和ListView始終希望模型或get_queryset（self）在您的類中繼承自ListView中定義。如果你想要做的是爲Post對象創建一個ListView，請嘗試在你的類中設置model=Post。