fixes

[wolnelektury.git] / src / lesmianator / models.py

diff --git a/src/lesmianator/models.py b/src/lesmianator/models.py
index bcf271c..e32dd04 100644 (file)
--- a/src/lesmianator/models.py
+++ b/src/lesmianator/models.py
@@ -140,7 +140,8 @@ class Continuations(models.Model):
 
     @classmethod
     def for_userlist(cls, ul):
-        cont_tabs = (cls.get(b) for b in ul.get_books())
+        cont_tabs = [cls.get(b) for b in ul.get_books()]
+        if not cont_tabs: return {}
         return reduce(cls.join_conts, cont_tabs)
 
     @classmethod