node

// User.js
var mongoose = require('mongoose'),
    bCrypt   = require('bcrypt-nodejs');

var Schema = mongoose.Schema;
var ObjectId = Schema.ObjectId;

var userSchema = new Schema({
  id: ObjectId,
  email: { type: String, unique: true, require: true, lowercase: true },
  password: { type: String, require: true, select: false },
  name: {
    firstName: { type: String, require: true },
    lastName: { type: String, require: true },
    username: { type: String }
  },
  avatar: { type: String },
  address: {
    street: String,
    city: String,
    state: String,
    zipcode: Number
  }
});

userSchema.pre('save', function(next) {
  var user = this;
  if(!user.isModified('password')) {
    return next();
  }
      bcrypt.hash(user.password, null, null, function(err, hash) {
        if (err) {
          return next(err);
        } else {
          user.password = hash;
          next();
        }
  });
});

module.exports = mongoose.model('User', userSchema);


// Passport.js
var LocalStrategy   = require('passport-local').Strategy;
var User = require('../models/user');
var bCrypt = require('bcrypt-nodejs');

var isValidPassword = function(user, password){
  return bCrypt.compareSync(password, user.password);
}

module.exports = function(passport) {

  passport.use('login', new LocalStrategy({
    usernameField: 'email',
    passwordField: 'password',
    passReqToCallback : true
  }, function(req, email, password, done) {

    // check in mongo if a user with username exists or not
    User.findOne({'email': req.body.email }, function(err, user) {
      // In case of any error, return using the done method

      if (err) {
        return done(err);
      }
      if (!user) {
        console.log('User Not Found with email');
        return done(null, false, req.flash('message', 'User Not found.'));
      }
      if (!isValidPassword(user, req.body.password)){
        console.log('Invalid Password');
        return done(null, false, req.flash('message', 'Invalid Password'));
      }
      return done(null, user);
    });
  }));
}