X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/1405761d13e0ba62db4b1f9a9d5fa1472142b6d0..e574992403e4b13920e4912511f5c48b006198ba:/apps/catalogue/models/book.py?ds=sidebyside

diff --git a/apps/catalogue/models/book.py b/apps/catalogue/models/book.py
index e6f08a91a..c2b54e4c5 100644
--- a/apps/catalogue/models/book.py
+++ b/apps/catalogue/models/book.py
@@ -275,10 +275,11 @@ class Book(models.Model):
         obsolete_children = set(b for b in book.children.all()
                                 if b not in children)
         for n, child_book in enumerate(children):
+            new_child = child_book.parent != book
             child_book.parent = book
             child_book.parent_number = n
             child_book.save()
-            if cover_changed:
+            if new_child or cover_changed:
                 child_book.parent_cover_changed()
         # Disown unfaithful children and let them cope on their own.
         for child in obsolete_children: