NodeJS socket.io in a router page

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I have the app.js code:

var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = require('socket.io')(server);

io.on('connection', function(socket){

  socket.on('newRideAdded', function(exclude){
    io.emit('newRideAdded', exclude);
  });

  console.log('a user connected');
  socket.on('disconnect', function(){
    console.log('user disconnected');
  });

});

var bodyParser = require('body-parser');
app.use(bodyParser.json()); // support json encoded bodies
app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies

app.use(express.static(__dirname + '/public/'));

app.use('/rides', require('./routes/rides'));
app.use('/user', require('./routes/user'));

server.listen("8080", function() {
  console.log("Connected to db and listening on port 8080");
});

And I want to move the socket io code to its router's page.

That is the router page:

var express = require('express');
var router = express.Router();
var mongojs = require('mongojs');
var db = mongojs("ride4you", []);

router.post('/getRides', function(req, res, next) {
  db.rides.find(function(err, docs) {
    res.json(docs);
  });
});

// rest of the restapi in this page.

// I want socket code to be here

module.exports = router;

As you can see i have each socket emits in each router's page and I already have module.exports in routers page.

How can it be done?

Thanks.

socket.io node-modules node.js
1 Answers

Using Express 4, in your app.js file you can use

app.set('socketio', io);

Then in your router or controller, you can use

router.post('/getRides', function(req, res, next) {
    var io = req.app.get('socketio');

    io.to(//socket.id//).emit("message", data);

    db.rides.find(function(err, docs) {
        res.json(docs);
    });
};

This is a clean way of passing the reference along.

user_19936920
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