How to store chat messages in database?

Question

I'm using Node.js with Rails for a basic chat app. Now when i refreshed the page all messages get deleted. So i want to store messages in rails database using AJAX. How can i do this?

nodejs/index.js

console.log("Server is starting...");

const http = require('http');

const hostname = '0.0.0.0';
const port = '8000';

console.log("Creating server...");

const server = http.createServer().listen(port, hostname);

console.log('chat server running on '+ hostname + ':' + port);

let socketList = require('socket.io').listen(server);

socketList.sockets.on('connection', function (socket) {
    console.log('connection received');
    console.log('socket in node = ', socket);

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

    socket.on('join_room', function (data) {
        socket.join(data.chatroom);

        socketList.in(data.chatroom).emit('user_joined', {
           user_email: data.user_email,
           chatroom: data.chatroom
        });   
    });

    socket.on('send_message', function (data) {
        console.log(data.message, data.user_email);
        socketList.in(data.chatroom).emit('receive_message', {
            message: data.message,
            user_email: data.user_email
        });
    });
});

rails/application.js

window.addEventListener('load', function (ev) {

    var user_email = $('#current_user_email').html(); // checking if user login

    if(user_email){
        var socket = io.connect('http://0.0.0.0:8000');
        console.log('socket in rails = ' , socket);

        socket.on('connect', function () {
            console.log('connection established to node server');
        });

        socket.emit('join_room',
        {
            user_email: user_email,
            chatroom: 'home'
        });

        socket.on('user_joined', function (data) {
            console.log(data.user_email + ' joined ' + data.chatroom);
        });

        $('#send-message').click(function () {
            let msg = $('#chat-message-input').val();

            if(msg !==''){
                socket.emit('send_message', {
                    message: msg,
                    user_email: user_email,
                    chatroom: 'home'
                });
            }

            $('#chat-message-input').val('');
        });

        socket.on('receive_message', function (data) {
            console.log(data.user_email, data.message);

            let newMessage = $('<li>');
            let messageType = 'other-message';
            if (data.user_email === user_email){
                messageType = 'self-message';
            }
            newMessage.addClass(messageType);

            newMessage.append($('<span>', {
                'html': data.message
            }));
            newMessage.append($('<sub>', {
                'html': data.user_email
            }));

            $('#chat-messages-list').append(newMessage);
        });

Also what are the different methods can be used to store messages in database? Can we also store directly in the Rails database just using Node.js?

what do you want to store means only `messages` or `messages with their sender name`.? — Rupesh, Apr 20 '18 at 04:58
messages between both sender and receiver with their names respectively. — Vishal Goel, Apr 24 '18 at 19:08
check this https://stackoverflow.com/questions/30823944/mongodb-best-design-for-messaging-app/30830429#30830429 — Rupesh, Apr 27 '18 at 15:14

score 1 · Answer 1 · edited May 24 '18 at 19:34

1

Not gonna write code but basically u can start:

rails g scaffold Chat name:text chat:text

then post with ajax to /chat.json set data like {name:user_name, chat:texxt}

Then also u need to ask all user chats from /chat.json Also u need to write in rails in index function

if params[:id]) do
  @chat = Chat.find(name:username)
else 
  @chat = Chat.all
end

Then show those messages to user but this is basic concept to get u going

edited May 24 '18 at 19:34

Daniel Serodio

4,229
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answered Apr 19 '18 at 20:25

Imre Raudsepp

1,068
8
8

Sorry.. not understand what are you trying to convey here? I'm getting all information about user and messages in application.js . So how can i use that information outside of application.js to store chats – Vishal Goel Apr 19 '18 at 20:29
inside application.js u send ajax calls with data to rails route where u save the data and anothe route where u can retive data – Imre Raudsepp Apr 19 '18 at 20:46

How to store chat messages in database?

1 Answers1