Question

在 ModelFormSetView 中如何删除行

这是我的代码，该如何管理Django-extra-views中的删除行

我正在尝试使用ModelFormSetView

if formset.deleted_forms:
    for obj in formset.deleted_forms:
        obj.delete()

HTML

{{ formset.management_form }}
{% for object in formset %}
{% for hidden in formset.hidden_fields %}
   {{ hidden }}
   {% endfor %}
<tr class="formset"  class="even pointer">{{ object.id }}
   <td class=" ">{{ object.as_p }}</td>                         
   <td class=""></td>
</tr>
    {% endfor %}

查看

这是一般视图，我如何管理填写在此的


class MeasurementPropsUpdateViews(ModelFormSetView):
    model = MeasurementProps
    form_class= MeasurementPropsForm

    template_name = "master/measurementprops_form.html"
    def get_queryset(self):
        pk = self.kwargs.get('pk')
        current_user = self.request.user
        return self.model.objects.filter(ProductName=pk, user=current_user)

    def get_success_url(self):
        return reverse("tailoringproducts")

    def formset_valid(self, formset):
            for docs_form in formset:
                docs_form.save(commit=False)
                if formset.deleted_forms:
                    for obj in formset.deleted_forms:
                        obj.delete()
                docs_form.instance.ProductName_id = self.kwargs.get('pk')
                docs_form.instance.user = self.request.user
                docs_form.save()
            messages.success(self.request, "Measurement Properties Updated successfully")
            return HttpResponseRedirect(self.get_success_url())

    def formset_invalid(self, formset):
        messages.error(self.request, "Form getting invalid")
        return self.render_to_response(self.get_context_data(formset=formset))

Answer 1

我尚未对此进行测试，但是根据文档，可以在类级别设置与表单集相关的属性。因此，根据您的情况，添加factory_kwargs并将can_delete指定为True，例如：

class MeasurementPropsUpdateView(ModelFormSetView):
    factory_kwargs = { 'can_order': False, 'can_delete': True}

Documentation

Answer 2

formset.deleted_forms仅在调用formset.save（commit = False）后可用。

def formset_valid(self, formset):
    if formset.is_valid():
        instances = formset.save(commit=False)

        # Delete objects
        for obj in formset.deleted_forms:
            obj.delete() 

        for obj in instances:
            obj.ProductName_id = self.kwargs.get('pk')
            obj = user = self.request.user
            obj.save()
        messages.success(self.request, "Measurement Properties Updated successfully")
        return HttpResponseRedirect(self.get_success_url())

    #Formset is not valid 
    return False

如何在django-extra-views中删除行？

2 个答案: