update

search/views/topic.py

@@ -78,6 +78,8 @@ def get_home_recommend_topic_ids(user_id, device_id, tag_id, offset, size, query
             else:
                 if offset>0: # 首次搜索时不需要过滤已读
                     have_read_topic_id_list = list(json.loads(redis_field_val_list[0]))
+        if have_read_topic_id_list == None:
+            have_read_topic_id_list = list()
         have_read_topic_id_list.extend(promote_topic_list)
         useful_topic_id_list = list()
         recommend_topic_user_list = list()