How can I use Passport.js with MongoDB for authentication?

How can I use Passport.js with MongoDB for authentication?

You can use Passport.js with MongoDB by integrating it with Mongoose to manage user sessions and authentication.

What are the steps to set it up?

First, install Passport.js and Mongoose. Then, create a user model, configure Passport strategies, and set up routes for login and registration.

Can you provide a code example?

Sure! Here's a basic example:

const mongoose = require('mongoose');
const passport = require('passport');

const UserSchema = new mongoose.Schema({
  username: String,
  password: String
});

const User = mongoose.model('User', UserSchema);

passport.use(new LocalStrategy(
  function(username, password, done) {
    User.findOne({ username: username }, function (err, user) {
      if (err) { return done(err); }
      if (!user) { return done(null, false); }
      // Check password here
      return done(null, user);
    });
  }
));

This sets up a basic user model and a local strategy for authentication.