nodeclub发帖时选择标签时提交报错修复

/controllers/topic.js

173行
var topic_tag = new TopicTag();
        topic_tag.topic_id = topic._id;
        topic_tag.tag_id = tag;
        topic_tag.save(proxy.done('tag_saved'));

上面代码块 修改为： TopicTag.newAndSave(topic._id, tag, proxy.done('tag_saved'));