Add logging to snapshot

server/books/models/snapshot.py

@@ -3,8 +3,11 @@ from django.db import models
 from django.db.models import Q
 
 from books.models import Chapter, ContentBlock, ContentBlockSnapshot
+from core.logger import get_logger
 from objectives.models import ObjectiveSnapshot
 
+logger = get_logger(__name__)
+
 
 class ChapterSnapshot(models.Model):
     """
@@ -127,6 +130,7 @@ class Snapshot(models.Model):
             without_owner = Q(owner__isnull=True)
             no_snapshot = Q(contentblocksnapshot__isnull=True)
             owner_user = Q(owner=user)
+            logger.info(f'resetting hidden properties for chapter {chapter.id}')
             chapter.title_hidden_for.remove(selected_class)
             chapter.description_hidden_for.remove(selected_class)