modify

trans2es/models/topic.py

@@ -91,16 +91,9 @@ class Topic(models.Model):
                     user_is_shadow = True
 
             # 是否官方推荐小组
-            if self.group.is_recommend:
+            if self.group and self.group.is_recommend:
                 offline_score += 4.0
 
-            """
-            group_query_results = Group.objects.filter(id=self.group_id)
-            if group_query_results.count() > 0:
-                if group_query_results[0].is_recommend:
-                    offline_score += 4.0            
-            """
-
             #帖子等级
             if self.content_level == '5':
                 offline_score += 5.0