Add CustomFieldsDataFieldInspector for OpenAPI spec

netbox/netbox/settings.py

@@ -484,6 +484,7 @@ REST_FRAMEWORK = {
 SWAGGER_SETTINGS = {
     'DEFAULT_AUTO_SCHEMA_CLASS': 'utilities.custom_inspectors.NetBoxSwaggerAutoSchema',
     'DEFAULT_FIELD_INSPECTORS': [
+        'utilities.custom_inspectors.CustomFieldsDataFieldInspector',
         'utilities.custom_inspectors.JSONFieldInspector',
         'utilities.custom_inspectors.NullableBooleanFieldInspector',
         'utilities.custom_inspectors.SerializedPKRelatedFieldInspector',

netbox/utilities/custom_inspectors.py

@@ -5,6 +5,7 @@ from drf_yasg.utils import get_serializer_ref_name
 from rest_framework.fields import ChoiceField
 from rest_framework.relations import ManyRelatedField
 
+from extras.api.customfields import CustomFieldsDataField
 from utilities.api import ChoiceField, SerializedPKRelatedField, WritableNestedSerializer
 
 
@@ -60,6 +61,17 @@ class NullableBooleanFieldInspector(FieldInspector):
         return result
 
 
+class CustomFieldsDataFieldInspector(FieldInspector):
+
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+        SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
+
+        if isinstance(field, CustomFieldsDataField) and swagger_object_type == openapi.Schema:
+            return SwaggerType(type=openapi.TYPE_OBJECT)
+
+        return NotHandled
+
+
 class JSONFieldInspector(FieldInspector):
     """Required because by default, Swagger sees a JSONField as a string and not dict
     """