X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/8c0d2b20aee2edeb9bd8639ee7fb1887359e9797..4134312db600f1a86fd8f0f9cfb7b0b9d58fba78:/catalogue/models.py?ds=sidebyside

diff --git a/catalogue/models.py b/catalogue/models.py
index 057236dc2..e80bd259a 100644
--- a/catalogue/models.py
+++ b/catalogue/models.py
@@ -81,6 +81,8 @@ class Book(models.Model):
     odt_file = models.FileField(_('ODT file'), upload_to='books/odt', blank=True)
     html_file = models.FileField(_('HTML file'), upload_to='books/html', blank=True)
     
+    parent = models.ForeignKey('self', blank=True, null=True)
+    
     objects = managers.ModelTaggedItemManager(Tag)
     tags = managers.TagDescriptor(Tag)