Use socket.io in controllers

Question

I only need socket.io to emit messages to clients, if a new object is inserted to database. So my idea was to emit the message directly fr

Answer 1

You can do this very easily you have to only write socket connection in app.js and than you can use socket anywhere you want

In app.js file put code like below

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

 io.sockets.on("connection", function (socket) {
 // Everytime a client logs in, display a connected message
 console.log("Server-Client Connected!");

 socket.join("_room" + socket.handshake.query.room_id);

 socket.on('connected', function (data) {

   });
});

const socketIoObject = io;
module.exports.ioObject = socketIoObject;

In any file or in controller you can import that object like below

 const socket = require('../app'); //import socket  from app.js

      //you can emit or on the events as shown 
 socket.ioObject.sockets.in("_room" + req.body.id).emit("msg", "How are You ?");