How to store chat messages in database? - ruby-on-rails

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?

Answer 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