Custom Script Error Connecting Cable

[cslingerland]

I'm testing connecting cables with a custom script to two interfaces but running into an error. Am I doing something wrong? I haven't found any good examples online of scripts for cable connections.

Script:

    def run(self, data, commit):

        primary_ge1 = Interface.objects.get(device_id=13055, name="GE1")
        ha_ge1 = Interface.objects.get(device_id=13056, name="GE1")

        new_cable = Cable(
                a_terminations=[
                    {
                        "object_type":"dcim.interface",
                        "object_id":primary_ge1.id
                        }
                    ],
                b_terminations=[
                    {
                        "object_type":"dcim.interface",
                        "object_id":ha_ge1.id
                        }
                    ]
                )

        new_cable.save()
        self.log_success(f"Created new cable {new_cable}")

Error:

An exception occurred: AttributeError: 'dict' object has no attribute '_meta'

Traceback (most recent call last):
  File "/opt/netbox-3.4.10/netbox/extras/scripts.py", line 476, in _run_script
    script.output = script.run(data=data, commit=commit)
  File "/opt/netbox-3.4.10/netbox/scripts/create_cable.py", line 50, in run
    new_cable.save()
  File "/opt/netbox-3.4.10/netbox/dcim/models/cables.py", line 192, in save
    super().save(*args, **kwargs)
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/db/models/base.py", line 812, in save
    self.save_base(
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/db/models/base.py", line 878, in save_base
    post_save.send(
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/dispatch/dispatcher.py", line 176, in send
    return [
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/dispatch/dispatcher.py", line 177, in <listcomp>
    (receiver, receiver(signal=self, sender=sender, **named))
  File "/opt/netbox-3.4.10/netbox/extras/signals.py", line 87, in handle_changed_object
    enqueue_object(queue, instance, request.user, request.id, action)
  File "/opt/netbox-3.4.10/netbox/extras/webhooks.py", line 72, in enqueue_object
    'data': serialize_for_webhook(instance),
  File "/opt/netbox-3.4.10/netbox/extras/webhooks.py", line 27, in serialize_for_webhook
    return serializer.data
  File "/opt/netbox/venv/lib64/python3.8/site-packages/rest_framework/serializers.py", line 555, in data
    ret = super().data
  File "/opt/netbox/venv/lib64/python3.8/site-packages/rest_framework/serializers.py", line 253, in data
    self._data = self.to_representation(self.instance)
  File "/opt/netbox/venv/lib64/python3.8/site-packages/rest_framework/serializers.py", line 522, in to_representation
    ret[field.field_name] = field.to_representation(attribute)
  File "/opt/netbox/venv/lib64/python3.8/site-packages/rest_framework/serializers.py", line 686, in to_representation
    return [
  File "/opt/netbox/venv/lib64/python3.8/site-packages/rest_framework/serializers.py", line 687, in <listcomp>
    self.child.to_representation(item) for item in iterable
  File "/opt/netbox-3.4.10/netbox/netbox/api/serializers/generic.py", line 31, in to_representation
    ct = ContentType.objects.get_for_model(instance)
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/contrib/contenttypes/models.py", line 41, in get_for_model
    opts = self._get_opts(model, for_concrete_model)
  File "/opt/netbox/venv/lib64/python3.8/site-packages/django/contrib/contenttypes/models.py", line 28, in _get_opts
    model = model._meta.concrete_model
AttributeError: 'dict' object has no attribute '_meta'

[cslingerland]

I figured it out - apparently you just have to reference the object in there which is different than how the API shows it. The API shows it requiring both fields as I had this written originally.

Working code:

def run(self, data, commit):

        primary_ge1 = Interface.objects.get(device_id=13055, name="GE1")
        ha_ge1 = Interface.objects.get(device_id=13056, name="GE1")

        new_cable = Cable(
                a_terminations=[ primary_ge1 ],
                b_terminations=[ ha_ge1  ]
                )

        new_cable.save()
        self.log_success(f"Created new cable {new_cable}")