Django formset初始数据如何为ForeignKeyFields指定值？

Question

我正在使用自定义内联FormSet成功初始化字段Ip的值：

# http://stackoverflow.com/a/24462173/129805
class PrepopulatedIpInlineFormSet(forms.models.BaseInlineFormSet):
    model = Ip

    def __init__(self, *args, **kwargs):
        super(PrepopulatedIpInlineFormSet, self).__init__(*args, **kwargs)
        apn_ggsns = ApnGgsn.objects.all()
        initial = []
        for apn_ggsn in apn_ggsns:
            print apn_ggsn.cidr
            cidr = IPNetwork(apn_ggsn.cidr)
            print cidr
            for ip in cidr:
                # skip .0 and .255 addresses
                ipstr = str(ip)
                print ipstr[-2:]
                if ipstr[-2:] == '.0' or ipstr[-4:] == '.255':
                    continue
                print ipstr
                num = Ip.objects.filter(ip=ipstr).count()#, apnid=apn_ggsn.apn_id, ggsn_id=apn_ggsn.ggsn_id).count()
                if num == 0:
                    initial.append({'ip': ipstr, 'apn': apn_ggsn.apn, 'ggsn': apn_ggsn.ggsn})
                    break
        self.initial = initial

ip字段正在用下一个空闲ip地址正确填充在管理表单上。正在正确生成多个内联表单/对象。在

{cd4}无法纠正初始值。在

我尝试过在dictionary键中添加一个_id后缀，并使用实际对象和对象的id作为值。在

<select>框从不显示初始的selected值。在

文档显示了示例，但没有ForeignKeyFields的示例

https://docs.djangoproject.com/en/1.9/topics/forms/formsets/#using-initial-data-with-a-formset

我做错什么了？在

Answer 1

这是一个浏览器刷新错误。当我打开一个新的标签页时，一切如期而至。在