django modelform 问题请教

models.py

class VirtualNode(models.Model):
    VIRTUAL_STATUS = (
        (0, '已停止'),
        (1, '已启动'),
        (2, '正在创建'),
        (3, '创建失败'),
    )
    virtual_id = models.AutoField(verbose_name="虚拟机 ID",primary_key=True)
    virtual_name = models.CharField(max_length=30,verbose_name="虚拟机名")
    virtual_ip = models.GenericIPAddressField(verbose_name="虚拟 IP")
    virtual_cpu = models.IntegerField(verbose_name="虚拟机 cpu(核数)")
    virtual_mem = models.IntegerField(verbose_name="虚拟机内存(GB)")
    virtual_disk = models.IntegerField(verbose_name="虚拟机硬盘(GB)")
    virtual_vmnode = models.ForeignKey(VmNode, verbose_name="所属宿主机")
    virtual_vlan = models.ForeignKey(VlanInfo,verbose_name="所属 Vlan")
    project = models.CharField(max_length=30,verbose_name="所属项目",null=True,blank=True)
    virtual_staus = models.IntegerField(verbose_name='运行状态',choices=VIRTUAL_STATUS,default=0)

    class Meta:
        verbose_name = "虚拟机节点"
        verbose_name_plural = verbose_name

forms.py

class VirtualNodeForm(forms.ModelForm):
    class Meta:
        model = VirtualNode
        fields = '__all__'

vievws.py

class VirtualNodeAddView(LoginRequireMixin, View):
    def get(self, request):
        pass
    def post(self, request):
        virtual_form = VirtualNodeForm(request.POST)
        if virtual_form.is_valid():

            virtual_form.save()
            return JsonResponse({'status':'success'})
        else:
            msg = virtual_form.errors.values()
            
            return JsonResponse({'status':'fail','msg':'虚拟机添加失败：{}'.format(msg)})  

前端的表单只会填 6 个字段

其中 virtual_name 、virtual_ip 会根据某些条件算出后自动保存。

那么问题来了

在views.py里面怎么将virtual_name virtual_ip，回填到virtual_form里，否在在下面的校验无法通过。