mongoskin db.collection.find().toArray()在os x中不起作用

Question

为什么这段代码能在linux (ubuntu12.04)中很好地工作。不能在os x 10.8/9中工作(节点版本，mongoskin版本是一部分)

var mongo = require('mongoskin');

exports.test = function(req, res) {
  var db = mongo.db('localhost:27017/btc', {safe: false});
  db.collection('user').find({}).toArray(function(err, results){
    console.log(results)
    res.json(200, {'flag': true});
  });
}

在os平台上。它会出错。

/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/base.js:242
throw message;      
      ^
TypeError: undefined is not a function
  at commandHandler      /Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/cursor.js:706:16)
  at /Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/db.js:1801:9
  at Server.Base._callHandler (/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/base.js:442:41)
  at /Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/server.js:485:18
  at MongoReply.parseBody (/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
  at null.<anonymous> (/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/server.js:443:20)
  at EventEmitter.emit (events.js:95:17)
  at null.<anonymous> (/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:191:13)
  at EventEmitter.emit (events.js:98:17)
  at Socket.<anonymous> (/Users/apple/code/btc/node_modules/mongoskin/node_modules/mongodb/lib/mongodb/connection/connection.js:418:22)

Answer 1

var mongoskin = require('mongoskin');
var url = 'localhost:27017/btc';
db = mongoskin.db(url, {safe: false});
db.bind('user', {});
db.user.find({}).toArray(function(err, results){
  console.log(results);
})