Merge pull request #124 from SacNaturalFoods/master

fixed _clear_ancestor_cache call

wiki/models/article.py

@@ -345,7 +345,7 @@ def _clear_ancestor_cache(article):
         ancestor.article.clear_cache()
 
 def on_article_save_clear_cache(instance, **kwargs):
-    _clear_ancestor_cache(instance.article)
+    _clear_ancestor_cache(instance)
 post_save.connect(on_article_save_clear_cache, Article)
 
 def on_article_delete_clear_cache(instance, **kwargs):