Felixge / Node-Mysql单独的连接文件

Question

I am attempting to use felixge/node-mysql in Node for my node app. However, instead of the usual

mysql.createConnection(...) 

in the app.js, I wanted it separate as a "config" file. Right now in my config.js it is:

function localConnect(){
    //Node Mysql dependency npm install mysql@2.0.0-alpha7
    return require('mysql').createConnection({
        hostname: 'localhost',
        user: 'username',
        password: 'password',
        database: 'database'
    });
}

and in app js:

...
//Node Mysql dependency npm install mysql@2.0.0-alpha7
var mysql = require('mysql');
//MYSQL database config file
var connection = require('./config.js').localConnect();
connection.connect();

and connection.connect() fails.

The purpose is so that I can commit it to my repo without exposing my DB connection info and still provide a dbSample file for the user incase they wish to use it.

Any suggestions?

Thanks!

Answer 1

I did not know about exporting in Node so as per Nick's hint, the following code works for config.js:

var mysql = function localConnect(){
    //Node Mysql dependency npm install mysql@2.0.0-alpha7
    return require('mysql').createConnection({
        hostname: 'localhost',
        user: 'username',
        password: 'password',
        database: 'database'
    });
}
module.exports.localConnect = mysql;

In the app.js:

//MYSQL database config file
var connection = require('./config.js').localConnect();
connection.connect(); //Successful

Answer 2

Another option:

db-config.js

module.exports = {
  hostname: 'localhost',
  user: 'username',
  ...
};

db.js

var config = require('./db-config');

module.exports = require('mysql').createConnection(config);

app.js

var db = require('./db.js');
db.query('SELECT ?', [ 1 ], function (err, data) { ... });