javascript - Node.js/MongoDB: How can I use module.exports to pass a localhost database url to server.js file? -

i have problem connection database mongoose on localhost.

in server.js file have:

var express     = require('express'); var app         = express();                        //create our app express var mongoose    = require('mongoose');              //mongoose mongodb var database    = require('./config/database.js');  //load database config  ...  //configuration ===================== mongoose.connect('database.url');   //connect mongodb database  ... 

in database.js file have:

// config/database.js  module.exports = { url : 'mongodb://127.0.0.1:27017/test' }; 

the error in node.js command prompt is:

events.js:141   throw er; // unhandled 'error' event   ^  error: failed connect [database.url:27017] @ null.<anonymous> (c:\*filepath*\node_modules\mongoose\node_modules\mongodb\lib\mongodb\connection\server.js:540:25) @ emitthree (events.js:97:13) @ emit (events.js:175:7) @ null.<anonymous> (c:\*filepath*\node_modules\mongoose\node_modules\mongodb\lib\mongodb\connection\connection_pool.js:140:15) @ emittwo (events.js:87:13) @ emit (events.js:172:7) @ socket.<anonymous> (c:\*filepath*\node_modules\mongoose\node_modules\mongodb\lib\mongodb\connection\connection.js:478:10) @ emitone (events.js:77:13) @ socket.emit (events.js:169:7) @ emiterrornt (net.js:1256:8) 

when use mongodb://127.0.0.1:27017/test in place of database.url works fine.

i'm using node.js v4.2.6 , mongodb 3.2 on windows 10.

how can module.exports pass url server.js?

remove '', because trying connect mongodb url 'database.url', need use url property database contains right url mongodb://127.0.0.1:27017/test

mongoose.connect(database.url);