Question

我正在尝试使用反向外键关系来获取遍历2个模型的对象。我已经能够获取第一个模型（ipv4address）的对象，但是无法通过反向外键获取链接到该对象的对象。我对django来说相当新，所以我可能会接近这个错误。任何建议都更受欢迎。

我将所有对等对象传递给模板：

    def view_ix(request, ix):
            peers = Peer.objects.filter(exchange=ix).order_by('asn')
            return render_to_response('view_ix.html', {
                                                    'peers': peers,
                                                    'exchange' : ix,
                                                    'exchanges' : exchanges.list(),
                                            }, context_instance = RequestContext(request))

型号：

    class Peer(models.Model):
            exchange                = models.CharField(max_length=50)
            organisation            = models.CharField(max_length=200)
            contact                 = models.EmailField(max_length=254)
            asn                     = models.IntegerField()
            def __unicode__(self):
                    return  unicode(self.asn) + '\t' + unicode(self.organisation)

    class IPv4Address(models.Model):
            peer                    = models.ForeignKey(Peer)
            ip                      = models.GenericIPAddressField(protocol='IPv4')
            def __unicode__(self):
                    return  unicode(self.peer) + '\t' + unicode(self.ip)

    class Router(models.Model):
            name            = models.CharField(max_length=50)
            fqdn            = models.CharField(max_length=50)
            snmpport        = models.IntegerField()
            snmpcommunity   = models.CharField(max_length=50)
            def __unicode__(self):
                    return  unicode(self.name)

    class PeerStatus(models.Model):
            router          = models.ForeignKey(Router)
            ipv4address     = models.ForeignKey(IPv4Address)
            state           = models.IntegerField()

模板：

    {% for peer in peers %}
            {% for ipv4 in peer.ipv4address_set.all %}
                ipv4: {{ ipv4.ip }}<br>
                {% for state in ipv4.peerstatus_set.all %}
                    state: {{ state.state }}<br>
                {% endfor %}
            {% endfor %}
    {% endfor %}

Answer 1

实际上按设计工作......问题在于（缺少）数据库内容。

django中多个嵌套的外键关系

1 个答案: