feat(core): Ensure that model has user context

ref: #788 #759

app/core/signal/audit_history.py

@@ -1,5 +1,6 @@
 from django.apps import apps
 from django.contrib.auth.models import ContentType
+from django.core.exceptions import ValidationError
 from django.db.models.signals import (
     # post_delete,
     post_save
@@ -26,6 +27,14 @@ def audit_history(sender, instance, **kwargs):
 
             audit_action = audit_model.Actions.DELETE
 
+        if instance.context.get('user', None) is None:
+
+            raise ValidationError(
+                code = 'model_missing_user_context',
+                message = f'Model {instance._meta.model_name}, is missing user context. ' \
+                    'No audit history can be saved'
+            )
+
 
         history = audit_model.objects.create(
             organization = instance.organization,