Fixes #5913: Improve change logging (#5924)

* Initial work on #5913
* Provide per-line diff highlighting
* BulkDeteView should delete objects individually to secure a pre-change snapshot
* Add changelog tests for bulk operations

netbox/utilities/utils.py

@@ -7,6 +7,7 @@ from django.core.serializers import serialize
 from django.db.models import Count, OuterRef, Subquery
 from django.db.models.functions import Coalesce
 from jinja2 import Environment
+from mptt.models import MPTTModel
 
 from dcim.choices import CableLengthUnitChoices
 from extras.utils import is_taggable
@@ -83,7 +84,7 @@ def count_related(model, field):
     return Coalesce(subquery, 0)
 
 
-def serialize_object(obj, extra=None, exclude=None):
+def serialize_object(obj, extra=None):
     """
     Return a generic JSON representation of an object using Django's built-in serializer. (This is used for things like
     change logging, not the REST API.) Optionally include a dictionary to supplement the object data. A list of keys
@@ -93,6 +94,11 @@ def serialize_object(obj, extra=None, exclude=None):
     json_str = serialize('json', [obj])
     data = json.loads(json_str)[0]['fields']
 
+    # Exclude any MPTTModel fields
+    if issubclass(obj.__class__, MPTTModel):
+        for field in ['level', 'lft', 'rght', 'tree_id']:
+            data.pop(field)
+
     # Include custom_field_data as "custom_fields"
     if hasattr(obj, 'custom_field_data'):
         data['custom_fields'] = data.pop('custom_field_data')
@@ -112,10 +118,6 @@ def serialize_object(obj, extra=None, exclude=None):
         if isinstance(key, str) and key.startswith('_'):
             data.pop(key)
 
-        # Explicitly excluded keys
-        if isinstance(exclude, (list, tuple)) and key in exclude:
-            data.pop(key)
-
     return data