我定义了以下类，它们基本上定义了一个 Node 类。每个节点可以有多个 NodeIntf 分配给它。每个 NodeIntf 可以有多个 NodeIntfIpaddr 分配给它。其中一个 NodeIntfIpaddr 可能被分配为 Node 对象上的 mgmt_ipaddr 属性。其中之一可能分配给 mgmt_ipaddr_v6 属性。现在在我的模板中，我基本上有一个用于接口的嵌套表，我想使用单选按钮选择器来选择为 Node 对象上的 mgmt_ipaddr(_v6) 属性选择的 ipaddrs，但我不太确定怎么做。我认为，当我遍历 ipaddr_formset 时，我必须检查该 ipaddr 是否代表选定的 mgmt_ipaddr，但我不知道该怎么做。任何帮助，将不胜感激。
class Node(models.Model):
name = models.CharField(max_length=64, primary_key=True)
mgmt_ipaddr = models.ForeignKey('NodeIntfIpaddr', null=True, on_delete=models.SET_NULL)
mgmt_ipaddr_v6 = models.ForeignKey('NodeIntfIpaddr', null=True, on_delete=models.SET_NULL)
class NodeIntf(models.Model):
intf = models.CharField(max_length=32)
node = models.ForeignKey('Node', on_delete=models.CASCADE)
class Meta:
unique_together = ('node', 'intf')
class NodeIntfIpaddr(models.Model):
node_intf = models.ForeignKey('NodeIntf', on_delete=models.CASCADE)
ipaddr = InetAddressField()
class Meta:
unique_together = ('node_intf', 'ipaddr')
class NodeForm(ModelForm):
class Meta:
model = Node
class NodeIntfForm(ModelForm):
class Meta:
model = NodeIntf
class NodeIntfIpAddrForm(ModelForm):
class Meta:
model = NodeIntfIpaddr
NodeIntfIpaddrFormSet = modelformset_factory(NodeIntfIpaddr,
form=NodeIntfIpAddrForm, extra=0)
class BaseNodeIntfFormSet(BaseInlineFormSet):
def add_fields(self, form, index):
super(BaseNodeIntfFormSet, self).add_fields(form, index)
instance = self.get_queryset()[index]
pk_value = instance.pk
form.ipaddr_formset = NodeIntfIpaddrFormSet(
queryset=NodeIntfIpaddr.objects.filter(node_intf=pk_value),
prefix='INTF_%s' % pk_value)
NodeIntfFormSet = inlineformset_factory(Node, NodeIntf,
form=NodeIntfForm, formset=BaseNodeIntfFormSet, extra=0)
class NodeUpdateView(UpdateView):
form_class = NodeForm
model = Node
def get_context_data(self, **kwargs):
c = super(NodeUpdateView, self).get_context_data(**kwargs)
node = self.get_object()
c['action'] = reverse('node-update', kwargs={'pk': node.name})
if self.request.POST:
node_intfs = NodeIntfFormSet(self.request.POST, instance=node)
if node_intfs.is_valid():
addrs = node_intfs.save_all()
else:
node_intfs = NodeIntfFormSet(instance=node)
c['node_intfs_formset'] = node_intfs
return c
模板片段：
<table class='node_intfs'>
<thead>
<tr class='node_intf'>
<th colspan='2'></th>
<th>Name</th>
<th></th>
</tr>
<tr class='node_intf_ipaddr'>
<th>IPv4 Mgmt<br><label><input type='radio' name='mgmt_ipaddr' value=''{{ node.mgmt_ipaddr|yesno:', checked' }}>None</label></th>
<th>IPv6 Mgmt<br><label><input type='radio' name='mgmt_ipaddr_v6' value=''{{ node.mgmt_ipaddr_v6|yesno:', checked' }}>None</label></th>
<th colspan='2'></th>
</tr>
</thead>
<tbody>
{% for node_intf_form in node_intfs_formset %}
<tr class='node_intf'>
<td colspan='2'></td>
<td>{{ node_intf_form.intf }}</td>
<td></td>
</tr>
{% if node_intf_form.ipaddr_formset %}
{% for ipaddr_form in node_intf_form.ipaddr_formset %}
<tr class='node_intf_ipaddr'>
<td>TODO</td> <---- These are what I can't figure out
<td>TODO</td> <---- These are what I can't figure out
<td></td>
<td>{{ ipaddr_form.ipaddr }}</td>
</tr>
{% endfor %}
{% endif %}
{% endfor %}
</tbody>
</table>