UpdateView缺少QuerySet錯誤

Question

截至今日，我的UpdateView不再有效。每當我選擇圖標編輯我得到以下錯誤項：

EntryUpdate is missing a QuerySet. Define EntryUpdate.model, EntryUpdate.queryset, or override EntryUpdate.get_queryset(). 

我從未有過內之前我UpdateView有一個QuerySet，所以我不清楚爲什麼它要求一個現在。我對Generic UpdateView的理解是自我查詢是內置的，但我可能是錯的。

任何幫助將不勝感激。

views.py

class IndexView(generic.ListView): 
    template_name = 'argent/index.html' 

    # paginate_by = 10 

    def get_queryset(self): 
     return Entry.objects.all() 

    def get_context_data(self, **kwargs): 

     ctx = super(IndexView, self).get_context_data(**kwargs) 

     # TODAY'S ENTRY 
     ctx['entry_qs'] = Entry.objects.filter(date=today_date) 

     # CURRENT SAVINGS TOTALS 
     ctx['savings_qs'] = Savings.objects.filter(id=1) 

     # MONTHLY TOTALS 

     # November 
     ctx['November16_qs'] = MonthYear.objects.filter(month='November') 
     # December 
     ctx['December16_qs'] = MonthYear.objects.filter(month='December') 
     # January 
     ctx['January17_qs'] = MonthYear.objects.filter(month='January') 
     # February 
     ctx['February17_qs'] = MonthYear.objects.filter(month='February') 
     # March 
     ctx['March17_qs'] = MonthYear.objects.filter(month='March') 
     # # April 
     # ctx['April_qs'] = MonthYear.objects.filter(month='April') 
     # # May 
     # ctx['May_qs'] = MonthYear.objects.filter(month='May') 

     return ctx 


class DetailView(generic.DetailView): 
    model = Entry 
    template_name = 'argent/detail.html' 
    # 
    # def get_context_data(self, **kwargs): 
    #  ctx = super(DetailView, self).get_context_data(**kwargs) 
    #  ctx['savings_qs'] = Savings.objects.filter(id=1) 
    #  return ctx 


class EntryCreate(CreateView): 
    form_class = EntryForm 
    template_name = 'argent/entry_form.html' 

    def form_valid(self, form): 
     if form.save(self): 
      # total_euros_spent 
      sum_euros = Entry.objects.aggregate(s=Sum('euros_sum')).get('s') 
      sum_euros_f = "{0:.2f}".format(sum_euros) 

      # total_dollars_spent 
      sum_dollars = Entry.objects.aggregate(s=Sum('dollars_sum')).get('s') 
      sum_dollars_f = "{0:.2f}".format(sum_dollars) 

      # total_sum 
      sum_savings = Entry.objects.aggregate(s=Sum('daily_savings_dollars')).get('s') 
      sum_format = "{0:.2f}".format(sum_savings) 

      # total_sum_format 
      sum_abs_savings = Entry.objects.aggregate(s=Sum('daily_savings_dollars')).get('s') 
      absolute = abs(sum_abs_savings) 
      sum_abs = "{0:.2f}".format(absolute) 

      Savings.objects.filter(id=1).update(total_savings=sum_format, total_savings_display=sum_abs, 
               total_spent_dollars=sum_dollars_f, total_spent_euros=sum_euros_f) 

      return super(EntryCreate, self).form_valid(form) 

     else: 
      return self 


class EntryUpdate(UpdateView): 
    form_class = EntryForm 
    template_name = 'argent/entry_form.html' 

    def form_valid(self, form): 
     if form.save(self): 
      # total_euros_spent 
      sum_euros = Entry.objects.aggregate(s=Sum('euros_sum')).get('s') 
      sum_euros_f = "{0:.2f}".format(sum_euros) 

      # total_dollars_spent 
      sum_dollars = Entry.objects.aggregate(s=Sum('dollars_sum')).get('s') 
      sum_dollars_f = "{0:.2f}".format(sum_dollars) 

      # total_sum 
      sum_savings = Entry.objects.aggregate(s=Sum('daily_savings_dollars')).get('s') 
      sum_format = "{0:.2f}".format(sum_savings) 

      # total_sum_format 
      sum_abs_savings = Entry.objects.aggregate(s=Sum('daily_savings_dollars')).get('s') 
      absolute = abs(sum_abs_savings) 
      sum_abs = "{0:.2f}".format(absolute) 

      Savings.objects.filter(id=1).update(total_savings=sum_format, total_savings_display=sum_abs, total_spent_dollars=sum_dollars_f, total_spent_euros=sum_euros_f) 

      return super(EntryUpdate, self).form_valid(form) 

     else: 
      return self 

urs.py

urlpatterns = [ 
    url(r'^$', views.IndexView.as_view(), name='index'), 

    url(r'entry/detail/(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'), 

    url(r'entry/add/$', views.EntryCreate.as_view(), name='entry-add'), 

    url(r'entry/update/(?P<pk>[0-9]+)/$', views.EntryUpdate.as_view(), name='entry-update'), 

] 

模板

{% if object_list %} 
     {% for Entry in object_list %} 
      <div class="col-md-3 col-sm-4 col-xs-6"> 
       <div class="thumbnail" style="background: #ebebeb" > 
        <h3 align="center" style="font-weight: bold; color: #337ab7;">{{ Entry.date }}</h3> 
        <div class="caption"> 
         <h4 align="center" style="color: #FF5A09">€{{ Entry.euros_sum }} 

         <!-- View Details --> 
         <a href="{% url 'argent:detail' Entry.id %}"><button type="button" class="btn btn-link btn-lg"> 
         <span class="glyphicon glyphicon-info-sign" aria-hidden="true"></span> 
         </button></a> 

         <!-- Update --> 
         <a href="{% url 'argent:entry-update' Entry.id %}"><button type="button" class="btn btn-link btn-lg" style="padding: 0"> 
         <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span> 
         </button> 
         </a> 
         </h4> 
        </div> 
       </div> 
      </div> 
     {% endfor %} 
     {% endif %} 

Answer 1

SOLUTION：

修正了它。原來我從視圖中意外刪除了model=Entry。一旦我將它添加回來，它就會重新開始工作。

class EntryUpdate(UpdateView): 
    model = Entry 
    form_class = EntryForm 
    template_name = 'argent/entry_form.html' 

    def form_valid(self, form): 
     ....