Question

我正在使用模型表单，我试图绕过某个特定字段的验证。

我已经确定我需要使用clean（）方法绕过该字段。但是当我打印出已清理的数据时，assigned_subnets字段不在字典中，它就丢失了

动作：我在forms.py中手动创建分配的子网字段。然后使用jquery我改变该表单字段并添加更多选择选项到它发布所有选项。发布的附加值不是原始字段选择的一部分，因此是错误。

打印输出：

{'site_data': None, 'switches': None, 'hostname': 'STR--RTR-01', 'template': <ConfigTemplates: STR-RTR-01>, 'model': <DeviceModel: Cisco - 4431>, 'install_date': datetime.date(2016, 5, 26), 'ospf_area': None, 'snmp_data': <SNMPData: XXXX>, 'available_subnets': <QuerySet []>}

forms.py

    class DeviceForm(forms.ModelForm):
    class Meta:
        model = DeviceData
        fields = ['site_data', 'switches', 'hostname', 'template', 'model', 'install_date','ospf_area','snmp_data']

    def clean(self):
        super(DeviceForm, self).clean()
        print(self.cleaned_data)
        if self.cleaned_data.get('assigned_subnets') in self._errors:
            del self._errors['assigned_subnets']
        return self.cleaned_data


def __init__(self, *args, **kwargs):
    site_id = kwargs.pop('site_id', None)
    device_id = kwargs.pop('device_id', None)
    self.is_add = kwargs.pop("is_add", False)
    super(DeviceForm, self).__init__(*args, **kwargs)

    devicesubnet = Subnets.objects.filter(devicesubnets__device_id=device_id)
    sitesubnet = Subnets.objects.filter(sitesubnets__site_id=site_id)
    common_subnets = list(set(devicesubnet) & set(sitesubnet))

    subnet_id_list = []
    for s in common_subnets: subnet_id_list.append(s.id)     
    available_subnet_data = sitesubnet.exclude(id__in=subnet_id_list)


    assigned_choices = []
    devicesubnet_data = DeviceSubnets.objects.filter(device_id=device_id)
    for choice in devicesubnet_data:
            assigned_choices.append((choice.subnet.id,choice.subnet.subnet))

    self.fields['available_subnets'] = forms.ModelMultipleChoiceField(
        label='Available Subnets',
        queryset=available_subnet_data,
        widget = forms.SelectMultiple(
            attrs = {'class': 'form-control', 'size' : '15'}
        )
    )

    self.fields['assigned_subnets'] = forms.MultipleChoiceField(
        label='Assigned Subnets',
        choices=assigned_choices,
        widget = forms.SelectMultiple(
            attrs = {'class': 'form-control', 'size' : '15'}
        )
    )
    self.fields['available_subnets'].required = False
    self.fields['assigned_subnets'].required = False
        self.helper = FormHelper(self)
        self.helper.form_id = 'device_form'
        self.helper.form_method = 'POST'
        ...

views.py

class EditDevice(UpdateView):
    model = DeviceData
    form_class = DeviceForm
    template_name = "config/device_form.html"

    @method_decorator(user_passes_test(lambda u: u.has_perm('config.edit_device')))
    def dispatch(self, *args, **kwargs):
        self.site_id = self.kwargs['site_id']
        self.site = get_object_or_404(SiteData, pk=self.site_id) 
        return super(EditDevice, self).dispatch(*args, **kwargs)

    def get_success_url(self, **kwargs):         
            return reverse_lazy("config:device_details", args=(self.site_id,))

    def form_valid(self, form):
        form.instance.site_data = self.site
        assigned_subnets = form.cleaned_data['assigned_subnets']
        print(assigned_subnets)
        return super(EditDevice, self).form_valid(form)


    def get_form_kwargs(self, *args, **kwargs):
        kwargs = super().get_form_kwargs()
        kwargs['site_id'] = self.site_id
        kwargs['device_id'] = self.object.pk
        return kwargs
    ...

修改我想要做的就像在下面的图像。我有一个可用子网列表和一个选定（已分配）子网列表。我不认为这个表单小部件存在于Django管理员之外？所以我手动创建了两个字段，并使用jquery将子网从可用移动到已分配。

然后我获得分配的子网并更新数据库。但是当我改变指定的字段时，我得到了错误

Django - 清理数据中遗失的字段

0 个答案: