Add Book.ancestor m2m.

[wolnelektury.git] / apps / social / templatetags / social_tags.py

diff --git a/apps/social/templatetags/social_tags.py b/apps/social/templatetags/social_tags.py
index 8891602..bb1b4bc 100755 (executable)
--- a/apps/social/templatetags/social_tags.py
+++ b/apps/social/templatetags/social_tags.py
@@ -2,6 +2,8 @@
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
+from random import randint
+from django.db.models import Q
 from django import template
 from catalogue.models import Book
 from social.models import Cite
@@ -20,16 +22,23 @@ def choose_cite(context, ctx=None):
         assert request.user.is_staff
         assert 'choose_cite' in request.GET
         cite = Cite.objects.get(pk=request.GET['choose_cite'])
-    except AssertionError, Cite.DoesNotExist:
+    except (AssertionError, Cite.DoesNotExist):
         if ctx is None:
             cites = Cite.objects.all()
         elif isinstance(ctx, Book):
-            cites = ctx.cite_set.all()
-            if not cites.exists():
-                cites = cites_for_tags([ctx.book_tag()])
+            cites = Cite.objects.filter(Q(book=ctx) | Q(book__ancestor=ctx))
         else:
             cites = cites_for_tags(ctx)
-        cite = cites.order_by('-sticky', '?')[0] if cites.exists() else None
+        stickies = cites.filter(sticky=True)
+        count = stickies.count()
+        if count:
+            cite = stickies[randint(0, count - 1)]
+        else:
+            count = cites.count()
+            if count:
+                cite = cites[randint(0, count - 1)]
+            else:
+                cite = None
     return cite