Question

我的问题类似于this问题。唯一的区别是我使用GCBV进行分页。我的视图文件如下：

class ChatListView(ListView):
    model = Chat
    form_class = NewMessageForm
    template_name = 'chat.html'
    paginate_by = 5
    queryset = model.objects.all() ###not needed


    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)        
        if form.is_valid():
            form.save()
            return redirect('chat') <--- here
        return render(request, self.template_name, {'form': form})

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)  
        context['form'] = NewMessageForm() # edited: self.form_class
        return context

我希望post方法重定向到分页的最后一页。在链接中，它是由return HttpResponseRedirect('/forum/topic/%s/?page=%s' % (topic.slug, posts.num_pages))实现的。但对于我的GCBV，我不知道如何通过一个对象获取.num_pages。请帮助。

Answer 1

您可以调用get_context_data，它将对查询集进行分页并在上下文中包含paginator。然后，您可以使用paginator.num_pages访问页数。

from django.urls import reverse

class ChatListView(ListView):
    ...

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)        
        if form.is_valid():
            form.save()
            self.object_list = self.get_queryset()  # get_context_data expects self.object_list to be set
            context = self.get_context_data()
            paginator = context['paginator']
            num_pages = paginator.num_pages
            return redirect(reverse('chat') + '?page=%s' % paginator.num_pages)

Django最后一页分页重定向

1 个答案: