-def choose_cite(book_id=None, tag_ids=None):
- """Choose a cite for main page, for book or for set of tags."""
- if book_id is not None:
- cites = Cite.objects.filter(Q(book=book_id) | Q(book__ancestor=book_id))
- elif tag_ids is not None:
- tags = Tag.objects.filter(pk__in=tag_ids)
- cites = cites_for_tags(tags)
- else:
- cites = Cite.objects.all()
- 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
-
-