对应第一篇文章api的编写

 router.get('/api/tags/search/:list/:key/:page', function(req, res) {
     if(_.isEmpty(req.params.key)) {
       res.json({items:null});
     } else {
       var key = urlencode.decode(req.params.key);

       var page = parseInt(req.params.page);
       if(!page) page = 0;

       var filter = {};

       if(req.params.list != 'all')
         filter = {term: {list: req.params.list}};

       Tag.search({
         filtered: {
           query: {query_string: {query:key}},
           filter: filter
         }
       }, {from: page * 40, size: 40}, function (err, results) {
         var items = results ? results.hits.hits : [];
         var total = results ? results.hits.total : 0;

         res.json({items: items, total:total});
       });
     }
   });

search()方法不知道从哪里来的，这个方法接受了三个参数：

1、

 filtered: {
           query: {query_string: {query:key}},
           filter: filter
         }

2、

{from: page * 40, size: 40}

3、

function (err, results) {
        var items = results ? results.hits.hits : [];
        var total = results ? results.hits.total : 0;

        res.json({items: items, total:total});
      }

静态方法中没有此方法；

此为问题