update

linucb/views/collect_data.py

@@ -76,7 +76,9 @@ class CollectData(object):
                 recommend_topic_id_list = list()
                 if click_topic_tag_list:
                     recommend_topic_id_list_click = ESPerform.get_tag_topic_list(click_topic_tag_list,have_read_topic_id_list)
-                recommend_topic_id_list.extend(recommend_topic_id_list_click[0:2])
+                if len(recommend_topic_id_list) > 0:
+                    num = min(len(recommend_topic_id_list),2)
+                    recommend_topic_id_list.extend(recommend_topic_id_list_click[0:num])
 
                 tag_id_list = recommend_tag_list[0:100]
                 tag_topic_id_list = ESPerform.get_tag_topic_list(tag_id_list,have_read_topic_id_list)