如何使Django orm将输入参数转换为查询结果

如何解决如何使Django orm将输入参数转换为查询结果

我有这四个表。

    class Topology(models):
        id = models.BigAutoField(primary_key=True)

    class Node(models):
        id = models.AutoField(primary_key=True)
        topology = models.ForeignKey('app.Topology',related_name='topology_nodes',on_delete=models.CASCADE)

    class NodeInterface(models):
        id = models.AutoField(primary_key=True)
        node = models.ForeignKey('app.Node',related_name='node_interfaces',on_delete=models.CASCADE)
        ip = models.GenericIPAddressField(null=True)

    class Event(models):
        id = models.AutoField(primary_key=True)
        node = models.ForeignKey('app.Node',related_name='node_events',on_delete=models.CASCADE)
        dst_ip = models.GenericIPAddressField() 

NodeInterface.ip是唯一的，因此我无法构建fk来连接Event.dst_ip和NodeInterface.ip。 我想将Event.dst_ip转换为dst_node_id。因此，我尝试了以下操作：

total_condition = Q()
total_condition.connector = 'OR'

for event in events:
    event_data[event.node.topological_id] = dict(src=event.node_id,dst=[])
    flux_condition = Q()
    flux_condition.connector = 'AND'
    flux_condition.children.append(('node__topological_id',event.node.topological_id))
    flux_condition.children.append(('nic_ip_address',event.dst))

    total_condition.children.append(flux_condition)
interfaces = BNodeInterface.objects.filter(total_condition)

查询后，我无法获得带有查询结果的event.node_id。希望有人可以帮助我解决该问题或教给我另一种实现此要求的方法。THX