在Django結合視圖中顯示錶單錯誤

我已經創建了組合ListView和FormView。如果我調用窗體有效的方法一切正常，但如果窗體無效，我嘗試初始化form_invalid方法，並重定向到MainView顯示窗體錯誤，我得到錯誤。在Django結合視圖中顯示錶單錯誤

views.py

class MainView(ListView, FormMixin): 
    """ 
    Main which display all posts 
    """ 
    # Setting template name 
    template_name = 'post/main.html' 
    # Setting view model 
    model = Post 
    # Setting pagination 
    paginate_by = 5 
    # Setting form class 
    form_class = PostForm 

    # Overriding get_context_data method 
    def get_context_data(self, **kwargs): 
     context = super(MainView, self).get_context_data(**kwargs) 
     context['form'] = self.form_class() 
     context['trends'] = Tag.objects.all().order_by('posts') 
     return context 

    # Handling post sending 
    def post(self, request): 
     form = self.form_class(request.POST) 

     if form.is_valid(): 
      self.form_valid(form) 
      return redirect('main') 
     else: 
      self.form_invalid(form) 
      return redirect('main') 

    def form_valid(self, form): 
     # Getting body text from form 
     text = form.cleaned_data['body'] 
     # Getting actual logged in user 
     author = self.request.user 
     # Getting image file 
     image_file = form.cleaned_data['image_file'] 
     # Getting image_url 
     image_url = form.cleaned_data['image_url'] 
     # Creating post instance and saving 
     post = Post(text=text, author=author, image_file=image_file, image_url=image_url) 
     post.save()

錯誤

AttributeError at /main/ 

'MainView' object has no attribute 'object_list'

交/ main.html中

<!--Post column--> 
    <section class="col-sm-7"> 

     <!--Iterating through posts--> 
     {% for post in object_list %} 
     {{ post.text}} 
     {% endfor %} 

    </section>

來源

2016-01-15 Paweł Kosiński

交換父母的名字有幫助嗎？ '類MainView（FormMixin，ListView）：'。 –

好像你正在嘗試從你的視圖中訪問'object_list'屬性，而不是使用它作爲模板變量。你可以顯示模板「'post/main.html'」..？ – mariodev

@mariodev好的，我添加了它。 –

問題是ListView和FormMixin不要在盒子外一起玩，所以你需要改變你的觀點。試試這個示例基本視圖：

class CreateListView(CreateView, ListView): 
    def form_invalid(self, request, *args, **kwargs): 
     return self.get(self, request, *args, **kwargs) 

    def get_context_data(self, **kwargs): 
     context = CreateView.get_context_data(self, **kwargs) 
     context.update(
      super(FormListView, self).get_context_data(**kwargs) 
     ) 
     return context 


class MainView(CreateListView): 
    template_name = 'post/main.html' 
    model = Post 
    paginate_by = 5 
    form_class = PostForm 
    success_url = reverse_lazy('this-view-name') 

    def get_context_data(self, **kwargs): 
     context = super(MainView, self).get_context_data(**kwargs) 
     context['trends'] = Tag.objects.all().order_by('posts') 
     return context

來源

2016-01-15 21:46:19

在Django結合視圖中顯示錶單錯誤

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