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node.js express session login authenticated

yoga saja answered on April 1, 2023 Popularity 8/10 Helpfulness 4/10

answer node.js express session login authenticated

node.js express session login authenticated

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// Import required modules
const express = require('express');
const session = require('express-session');

// Create an instance of Express
const app = express();

// Set up session management middleware
app.use(session({
  secret: 'mysecret', // Change this to a secure secret in production
  resave: false,
  saveUninitialized: true,
  cookie: { secure: false } // Set to true if using HTTPS
}));

// Define a login route
app.post('/login', (req, res) => {
  const { username, password } = req.body;

  // Check if username and password are correct
  if (username === 'myusername' && password === 'mypassword') {
    // If correct, set the user as authenticated in the session
    req.session.authenticated = true;
    res.redirect('/dashboard');
  } else {
    // If incorrect, redirect back to the login page with an error message
    res.redirect('/login?error=1');
  }
});

// Define a middleware to check if the user is authenticated
const isAuthenticated = (req, res, next) => {
  if (req.session.authenticated) {
    // If authenticated, continue with the request
    next();
  } else {
    // If not authenticated, redirect to the login page
    res.redirect('/login');
  }
};

// Define a dashboard route that requires authentication
app.get('/dashboard', isAuthenticated, (req, res) => {
  res.send('Welcome to the dashboard!');
});

// Define a login page route
app.get('/login', (req, res) => {
  // Check if there is an error message in the query string
  const error = req.query.error ? 'Invalid username or password' : '';

  // Render the login page with the error message
  res.render('login', { error });
});

// route untuk logout
app.get('/logout', (req, res) => {
  // menghapus informasi login dari session
  req.session.destroy();
  res.redirect('/login');
});

// Start the server
app.listen(3000, () => {
  console.log('Server started on port 3000');
});

Popularity 8/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: express-session javascript node.js

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Contributed on Apr 01 2023

yoga saja

0 Answers Avg Quality 2/10

node.js express session login authenticated

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