X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/967eed676fc83d15b26149047f353ac61faa8217..355e42e2b2244470ac6a5b9ad056e4a3f38f838c:/src/catalogue/models/book.py

diff --git a/src/catalogue/models/book.py b/src/catalogue/models/book.py
index 206ab733b..c0d47f9e2 100644
--- a/src/catalogue/models/book.py
+++ b/src/catalogue/models/book.py
@@ -697,7 +697,7 @@ class Book(models.Model):
         """
 
         books_by_parent = {}
-        books = cls.objects.order_by('parent_number', 'sort_key').only('title', 'parent', 'slug')
+        books = cls.objects.order_by('parent_number', 'sort_key').only('title', 'parent', 'slug', 'extra_info')
         if book_filter:
             books = books.filter(book_filter).distinct()