Python 表单中的筛选器查询集

我有一个应用程序可以保存工单列表，还有一个应用程序可以保存零件列表

class Order(models.Model):
  parts = models.ManyToManyField(Part, blank=True) # Assosiated parts

class Part(models.Model):
  partnum = models.CharField(max_length=20) # Part number
  mwos = models.ManyToManyField('mtn.Order', blank=True) # Assosiated work orders

现在我想在订单的

DetailView

视图中添加一个按钮，该按钮将打开一个零件列表，我可以将其添加到订单中。目前，我已经为我的订单创建了一个

UpdateView

class AddPartView(LoginRequiredMixin, UserPassesTestMixin, UpdateView):   
    model = Order
    form_class = AddPartForm
    ...   

还有一张表格

class AddPartForm(forms.ModelForm):
    class Meta:
        model = Order
        fields = ['parts', ]
        labels = {'parts': "Parts", }

    def FilterList(request):
        qs = Part.objects.all()
        search_part_query = request.GET.get('search_part')

        if is_valid_queryparam(search_part_query):
            qs = qs.filter(Q(partnum__icontains=search_part_query) 
                | Q(descr__icontains=search_part_query)
                ).distinct()

        return qs         

    def __init__(self, *args, **kwargs):

        super(AddPartForm, self).__init__(*args, **kwargs)

        self.fields["parts"].widget = CheckboxSelectMultiple()
        self.fields["parts"].queryset = self.FilterList()

对于此模板

{% block content %}

  <form method="GET" action=".">
    <div class="form-row justify-content-start">
      <div class="form-group col-md align-self-center">
        <div class="input-group">
          <input class="form-conrol py-2 border-right-0 border" type="search" placeholder="Find part" name="search_part">
            <span class="input-group-append">
              <div class="input-group-text bg-transparent">
                <i class="fa fa-search"></i>
              </div>
            </span>                      
        </div>
      </div>            
    </div>
    <button type="submit" class="btn btn-primary btn-sm btn-block">Search</button>    
  </form>

  <form action="{% url 'mtn:add_part' order.id %}" method='post'>
    {% csrf_token %}
    {{ form.as_p }}  
    <button type="submit">Save</button>
  </form>

{% endblock content %}

{%block content%}
搜寻
{%csrf_令牌%}
{{form.as_p}}
拯救
{%endblock内容%}

但当我执行它的时候

“AddPartForm”对象没有属性“GET”

错误

我是编程新手，所以我可能用错误的方法来处理这个问题

表单通常不知道

请求

对象。您可以制作这样的表单，例如：

class AddPartForm(forms.ModelForm):
    class Meta:
        model = Order
        fields = ['parts', ]
        labels = {'parts': "Parts", }
        widgets = {
            'parts': CheckboxSelectMultiple
        }

    def filter_list(self, request):
        qs = Part.objects.all()
        search_part_query = request.GET.get('search_part')

        if is_valid_queryparam(search_part_query):
            qs = qs.filter(Q(partnum__icontains=search_part_query) 
                | Q(descr__icontains=search_part_query)
                ).distinct()

        return qs         

    def __init__(self, *args, request=None, **kwargs):
        super(AddPartForm, self).__init__(*args, **kwargs)
        self.fields["parts"].queryset = self.filter_list(request)

class AddPartView(LoginRequiredMixin, UserPassesTestMixin, UpdateView):   
    model = Order
    form_class = AddPartForm

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs.update(request=self.request)
        return kwargs