1

我在我的一个观点中使用了这段代码：

    if request.method == 'POST':
      vehicle = VehicleForm(request.POST or None)
      photos = PhotosFormSet(request.POST or None)
      if vehicle.is_valid():
        vehicle.save()
        photos = PhotosFormSet(request.POST, instance=vehicle)
        photos.save()
        return HttpResponseRedirect('/vehicles/')
    else:
      vehicle = VehicleForm()
      photos = PhotosFormSet(instance=Vehicle())

    return render_to_response('vehicles/vehicles-add-edit.html', 
           {'vehicle': vehicle, 'photos': photos}, 
           context_instance=RequestContext(request))

但我收到一个错误：'VehicleForm' object has no attribute 'pk'当我尝试提交表单时。

我已经声明PhotosFormSet为：

from django.contrib.contenttypes.generic import generic_inlineformset_factory
PhotosFormSet = generic_inlineformset_factory(Photo, extra=10)

然后我的Photo课如下：

class Photo(ImageModel):
  name = models.CharField(max_length=100)
  original_image = models.ImageField(upload_to='photos')
  num_views = models.PositiveIntegerField(editable=False, default=0)
  position = models.ForeignKey(PhotoPosition)
  content_type = models.ForeignKey(ContentType)
  object_id = models.PositiveIntegerField()
  content_object = generic.GenericForeignKey('content_type', 'object_id')

  class IKOptions:
    spec_module = 'specs'
    cache_dir = 'photos'
    image_field = 'original_image'
    save_count_as = 'num_views'
4

1 回答 1

0

这是你的问题：

vehicle.save()
photos = PhotosFormSet(request.POST, instance=vehicle)

vehicle这里是 Form，而不是 Vehicle 对象。.save()返回一个新的车辆，但你没有将它设置为一个变量，所以它丢失了。然后，您将表单而不是新对象传递给表单集。

相反，只需这样做：

new_vehicle = vehicle.save()
photos = PhotosFormSet(request.POST, instance=new_vehicle)
于 2010-02-03T10:27:19.633 回答