[PluginDev] Custom Object field linked to a plugin's model : tables

[AlexandreLanglade]

Hi ! I'm struggling with something :

• I created a model "MyModel" in a plugin
• I created a Custom Field with :
  - Assigned Model : dcim | device role
  - Type : Object (MyModel)

I'm trying to get the table of all DeviceRoles attached to myModel when I'm in myModel's view.

class MyModelView(generic.ObjectView):
    queryset = models.MyModel.objects.all()

    def get_extra_context(self, request, instance):
        device_roles = DeviceRole.objects.restrict(request.user, 'view').filter(
            custom_field_data=instance
        )
        device_roles_table = tables.DeviceRoleTable(device_roles, user=request.user, exclude=('mymodel',))
        device_roles_table.configure(request)

        return {
            'device_roles_table': device_roles_table,
            'device_role_count': DeviceRole.objects.filter(custom_field_data=instance).count(),
        }

But that doesn't work 😢

Object of type MyModel is not JSON serializable

The question is : How can I use and work with custom_field_data in DeviceRole.objects.filter(?) ?