Getting error while generating database migrations

[hamidallaoui]

Hi All,

I did somes updates on core dcim site model and when I tried to generate DB migrations I got below errors.

cd /opt/netbox/netbox

source /opt/netbox/venv/bin/activate

python3 manage.py makemigrations dcim -n update_dcim_site_model

Traceback (most recent call last):
File "/opt/netbox-3.1.8/netbox/manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/management/init.py", line 419, in execute_from_command_line
utility.execute()
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/management/init.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/management/base.py", line 354, in run_from_argv
self.execute(*args, **cmd_options)
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/management/base.py", line 393, in execute
self.check()
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/management/base.py", line 419, in check
all_issues = checks.run_checks(
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/core/checks/registry.py", line 76, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/debug_toolbar/apps.py", line 60, in check_middleware
if is_middleware_class(GZipMiddleware, middleware):
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/debug_toolbar/apps.py", line 115, in is_middleware_class
middleware_cls = import_string(middleware_path)
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/local/lib/python3.10/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1050, in _gcd_import
File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "/opt/netbox-3.1.8/netbox/netbox/middleware.py", line 14, in
from netbox.views import server_error
File "/opt/netbox-3.1.8/netbox/netbox/views/init.py", line 26, in
from netbox.constants import SEARCH_MAX_RESULTS, SEARCH_TYPES
File "/opt/netbox-3.1.8/netbox/netbox/constants.py", line 3, in
from circuits.filtersets import CircuitFilterSet, ProviderFilterSet, ProviderNetworkFilterSet
File "/opt/netbox-3.1.8/netbox/circuits/filtersets.py", line 4, in
from dcim.filtersets import CableTerminationFilterSet
File "/opt/netbox-3.1.8/netbox/dcim/filtersets.py", line 5, in
from extras.filtersets import LocalConfigContextFilterSet
File "/opt/netbox-3.1.8/netbox/extras/filtersets.py", line 217, in
class ConfigContextFilterSet(ChangeLoggedModelFilterSet):
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django_filters/filterset.py", line 71, in new
new_class.base_filters = new_class.get_filters()
File "/opt/netbox-3.1.8/netbox/netbox/filtersets.py", line 188, in get_filters
additional_filters.update(cls.get_additional_lookups(existing_filter_name, existing_filter))
File "/opt/netbox-3.1.8/netbox/netbox/filtersets.py", line 146, in get_additional_lookups
resolve_field(field, lookup_expr) # Will raise FieldLookupError if the lookup is invalid
File "/opt/netbox-3.1.8/venv/lib/python3.10/site-packages/django_filters/utils.py", line 196, in resolve_field
query = model_field.model._default_manager.all().query
AttributeError: 'NoneType' object has no attribute 'model'

Any help will be high appreciated.

Thanks

[candlerb]

I did somes updates on core dcim site model

If you want to customize the way Netbox works, there are a number of supported ways to do this, in particular Plugins and Custom Fields. The latter is the only supported way to modify core Netbox models.

[hamidallaoui]

OK noted with thanks.