4

我正在尝试覆盖模型表单中的保存以将当前用户添加为车辆的所有者。但是我收到“NoneType”对象没有属性“用户”我忘记了什么？

表格.py：

class VehicleForm(ModelForm):
    class Meta:
        model = Vehicle
        exclude = ('slug', 'owner', )

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request', None)
        super(VehicleForm, self).__init__(*args, **kwargs)

    def save(self, *args, **kwargs):
        kwargs['commit']=False
        obj = super(VehicleForm, self).save(*args, **kwargs)
        obj.owner = self.request.user
        obj.save()
        return obj

我的模型：

class VehicleBase(models.Model):

    owner           = models.ForeignKey(User)

    vehicle_type    = models.SmallIntegerField(_('kind'),
                  choices=vehicle_types, default=1,)

    make            = models.CharField(_('make'), max_length=31,
                  help_text=_('Maximum is 31 characters.'), )

    model           = models.CharField(_('model'), max_length=31,
                  help_text=_('Maximum is 31 characters.'), )

    class Meta:
        abstract = True


class Vehicle(VehicleBase):
    name        = models.CharField(_('fun name'), max_length=31,
                  help_text=_('Maximum is 31 characters.'), )

    slug            = models.SlugField(_('slug'), )

    def save(self, *args, **kwargs):
        is_new = self.pk is None
        if is_new:
            self.slug = slugify("%s %s %s" %(self.make, self.model, self.name, ))
        super(Vehicle, self).save(*args, **kwargs) # Call the "real" save() method.

        if is_new:
            Calendar.objects.get_or_create_calendar_for_object(self, name = "%s's schedule" %self.name)

    class Meta:
        unique_together = (("name", "owner", ), )

def __unicode__(self):
    return u'%s: %s\'s %s %s' %(self.name, self.owner, self.make, self.model, )

def __str__(self):
    return self.__unicode__()

def get_absolute_url(self):
    return reverse('vehicle_view', kwargs={'object_id':self.id, 'slug':self.slug, }, )

我正在使用通用视图：

url(r'^create/$',
    'create_update.create_object',
    dict(template_name='vehicles/vehicle_create.html',
         form_class=VehicleForm,
         post_save_redirect="/vehicles/"),
    name='vehicle_create'),
4

3 回答 3

3

我想在 Manoj 和 Daniel 的回复中添加更多信息。基本上我需要一个自定义视图才能在保存时传递用户：

网址.py：

url(r'^create/$',
    'create_vehicle',
    name='vehicle_create'),

视图.py：

@login_required
def create_vehicle(request):
    if request.method == 'POST':
        form = VehicleForm(request.POST)
        if form.is_valid():
            vehicle = form.save(commit=False)
            vehicle.owner = request.user
            vehicle.save()
        return HttpResponseRedirect('/vehicles/')
    else:
        form = VehicleForm()
    return render_to_response('vehicles/vehicle_create.html', {'form': form},     context_instance=RequestContext(request))

表格.py：

class VehicleForm(ModelForm):
    class Meta:
        model = Vehicle
        exclude = ('slug', 'owner', )
于 2010-10-21T21:46:42.760 回答
3

这是我这些天如何编写视图的简短版本，仅供将来参考。不需要任何子__init__类化，也不需要重复表单构造函数：

@login_required
def create_vehicle(request):
    form = forms.VehicleForm(data=request.POST or None)
    if form.is_valid():
        form.instance.owner = request.user
        form.save()
        return redirect('vehicles')
    return render(request, 'vehicles/vehicle_create.html', {'form': form})
于 2011-08-31T02:13:27.720 回答
2

您没有显示如何在视图中实例化表单。您需要记住在这样做时实际传递请求：

def myview(request):
    form = VehicleForm(instance=whatever, request=request)
于 2010-09-08T08:48:42.150 回答