Front ports with linked rear ports cannot be serialized

[alryaz]

pynetbox version

v7.6.1

NetBox version

v4.5.1

Python version

3.12

Steps to Reproduce

1. Create a patch panel with 1:1 port mapping (front-rear)
2. Issue a command to, say, update labels:

for port in nb.dcim.front_ports.filter(device_id=823):
  port.update({"label": "This is some label"})

Expected Behavior

Front port labels updated

Observed Behavior

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 678, in update
    return self.save()
           ^^^^^^^^^^^
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 640, in save
    updates = self.updates()
              ^^^^^^^^^^^^^^
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 617, in updates
    diff = self._diff()
           ^^^^^^^^^^^^
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 593, in _diff
    current = Hashabledict({fmt_dict(k, v) for k, v in self.serialize().items()})
                                                       ^^^^^^^^^^^^^^^^
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 573, in serialize
    v = v.id
        ^^^^
  File "/home/alryaz/.local/lib/python3.12/site-packages/pynetbox/core/response.py", line 328, in __getattr__
    raise AttributeError('object has no attribute "{}"'.format(k))
AttributeError: object has no attribute "id"

[alryaz]

I'd like to add that linked rear ports indeed do not have an '.id' field.

The relations do, however, have a rear_port field that contains that ID:

<...>
            "color": "",
            "positions": 1,
            "rear_ports": [
                {
                    "position": 1,
                    "rear_port": 1653,
                    "rear_port_position": 1
                }
            ],
            "description": "",
            "mark_connected": false,
            "cable": null,
            "cable_end": null,
<...>

[alryaz]

When editing pynetbox/core/response.py manually and replacing:

                        elif isinstance(v, Record):
                            v = v.id

with:

                        elif isinstance(v, Record):
                            if hasattr(v, 'rear_port'):
                                v = v.rear_port
                            else:
                                v = v.id

then everything works.

[arthanson]

This seems to be caused by the new port mappings, serialize is expecting an id which isn't there, will need to be updated.