Introduction to connect-flash-plus

connect-flash-plus is a Node.js middleware that provides flash messages for web applications. Flash messages are temporary messages to be displayed to the user, typically used for notifications like form success/failure messages.

Basic Installation

npm install connect-flash-plus

APIs and Usage Examples

Here are some of the most commonly used APIs provided by connect-flash-plus:

1. Setting Up Middleware

const express = require('express');
const flash = require('connect-flash-plus');
const session = require('express-session');

const app = express();

app.use(session({ 
    secret: 'secret', 
    resave: false, 
    saveUninitialized: true 
}));
app.use(flash());

2. Flash Messages in Routes

app.get('/login', (req, res) => {
    res.render('login', { messages: req.flash('info') });
});

app.post('/login', (req, res) => {
    // Assume user authentication logic here
    if(authSuccess) {
        req.flash('info', 'Login successful');
        res.redirect('/dashboard');
    } else {
        req.flash('info', 'Login failed');
        res.redirect('/login');
    }
});

3. Flash Messages with Dynamic Content

app.post('/register', (req, res) => {
    // Assume registration logic here
    req.flash('info', `Welcome ${req.body.username}, registration successful!`);
    res.redirect('/login');
});

Full App Example

const express = require('express');
const flash = require('connect-flash-plus');
const session = require('express-session');

const app = express();
app.use(express.urlencoded({ extended: true }));
app.use(session({ 
    secret: 'secret', 
    resave: false, 
    saveUninitialized: true 
}));
app.use(flash());
app.set('view engine', 'ejs');

app.get('/login', (req, res) => {
    res.render('login', { messages: req.flash('info') });
});

app.post('/login', (req, res) => {
    // Assume user authentication logic here
    if(authSuccess) {
        req.flash('info', 'Login successful');
        res.redirect('/dashboard');
    } else {
        req.flash('info', 'Login failed');
        res.redirect('/login');
    }
});

app.get('/register', (req, res) => {
    res.render('register');
});

app.post('/register', (req, res) => {
    // Assume registration logic here
    req.flash('info', `Welcome ${req.body.username}, registration successful!`);
    res.redirect('/login');
});

app.get('/dashboard', (req, res) => {
    res.send('Dashboard Page');
});

app.listen(3000, () => {
    console.log('Server running on port 3000');
});

By integrating connect-flash-plus in your application, you can efficiently manage user notifications and improve the overall user experience.

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