fix rating count

catalog/templates/item_base.html

@@ -286,7 +286,7 @@
                   <h3>
                     {{ item.rating | floatformat:1 }} <small>/ 10</small>
                   </h3>
-                  <p>{{ item.rating_count }}人评分</p>
+                  <p>{{ item.rating_count }}个评分</p>
                 </hgroup>
               </div>
               <div data-placement="top">

journal/models.py

@@ -341,7 +341,8 @@ class Rating(Content):
 
     @staticmethod
     def get_rating_count_for_item(item):
-        stat = Rating.objects.filter(item=item, grade__isnull=False).aggregate(
+        ids = item.child_item_ids + [item.id]
+        stat = Rating.objects.filter(item_id__in=ids, grade__isnull=False).aggregate(
             count=Count("item")
         )
         return stat["count"]