netbox-docker/startup_scripts/020_custom_fields.py

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import sys
from extras.models import CustomField
from startup_script_utils import load_yaml
def get_class_for_class_path(class_path):
import importlib
from django.contrib.contenttypes.models import ContentType
module_name, class_name = class_path.rsplit(".", 1)
module = importlib.import_module(module_name)
clazz = getattr(module, class_name)
return ContentType.objects.get_for_model(clazz)
customfields = load_yaml('/opt/netbox/initializers/custom_fields.yml')
if customfields is None:
sys.exit()
for cf_name, cf_details in customfields.items():
custom_field, created = CustomField.objects.get_or_create(name = cf_name)
if created:
if cf_details.get('default', False):
custom_field.default = cf_details['default']
if cf_details.get('description', False):
custom_field.description = cf_details['description']
if cf_details.get('label', False):
custom_field.label = cf_details['label']
for object_type in cf_details.get('on_objects', []):
custom_field.content_types.add(get_class_for_class_path(object_type))
if cf_details.get('required', False):
custom_field.required = cf_details['required']
if cf_details.get('type', False):
custom_field.type = cf_details['type']
if cf_details.get('weight', -1) >= 0:
custom_field.weight = cf_details['weight']
if cf_details.get('choices', False):
custom_field.choices = []
for _, choice_detail in enumerate(cf_details.get('choices', [])):
if isinstance(choice_detail, str):
custom_field.choices.append(choice_detail)
else: # legacy mode
print(f"⚠️ Please migrate the 'choices' of '{cf_name}' to the new format, as 'weight' is no longer supported!")
custom_field.choices.append(choice_detail['value'])
custom_field.save()
print("🔧 Created custom field", cf_name)