+ best = []
+ best_places = 5
+ for recommended in Collection.objects.filter(role='recommend').order_by('?'):
+ books = list(recommended.get_books().exclude(id__in=[b.id for b in best]).order_by('?')[:best_places])
+ best.extend(books)
+ best_places -= len(books)
+ if not best_places:
+ break
+ if best_places:
+ best.extend(
+ list(
+ Book.objects.filter(findable=True).exclude(id__in=[b.id for b in best]).order_by('?')[:best_places]
+ )
+ )
+ ctx['best'] = best