user2235057 user2235057 - 1 year ago 170
Node.js Question

Error with passportjs: Unknown authentication strategy "local"

I am developing a nodejs application and using passportjs for authentication. I am using local strategy of passport. But when I try to login, I am getting following error:

Error: Unknown authentication strategy "local"
at attempt (/home/project/node_modules/passport/lib/middleware/authenticate.js:166:37)
at authenticate (/home/project/node_modules/passport/lib/middleware/authenticate.js:338:7)
at exports.authenticate (/home/project/controllers/RegistrationsController.js:87:4)
at callbacks (/home/project/node_modules/express/lib/router/index.js:164:37)
at param (/home/project/node_modules/express/lib/router/index.js:138:11)
at pass (/home/project/node_modules/express/lib/router/index.js:145:5)
at Router._dispatch (/home/project/node_modules/express/lib/router/index.js:173:5)
at Object.router (/home/project/node_modules/express/lib/router/index.js:33:10)
at next (/home/project/node_modules/express/node_modules/connect/lib/proto.js:193:15)
at /home/project/node_modules/express-flash/lib/express-flash.js:31:7

Here is my passport-config.js file:

var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var User = require('../models/user');

passport.serializeUser(function(user, done) {

passport.deserializeUser(function(id, done) {
User.findById(id, function (err, user) {
done(err, user);

passport.use({usernameField: 'emailAddress'}, new LocalStrategy(function(username, password, done) {
User.findOne({ emailAddress: username }, function(err, user) {
return done(err);
if (!user) {
return done(null, false, { message: 'Email ' + username + ' not found'});
//check if password matches and pass parameters in done accordingly

And following is my RegistrationsController.js file, where my authenticate api resides,

var passport = require('passport');

exports.authenticate = function(req, res, next){
console.log('Login request!');
passport.authenticate('local', function(err, user, info) {
console.log('In authenticate callback!');
if (err) return next(err);

if (!user) {
req.flash('errors', { msg: info.message });
res.status(500).json({message: info.message});
})(req, res, next);

Have been looking at the code since past 2 days but could not figure out the error yet. I have installed both
modules. Any help would be greatly appreciated.

Answer Source

There is a syntax error in this code. usernameField: 'emailAddress' Has to be passed in LocalStrategy constructor like this...

passport.use(new LocalStrategy({
   usernameField: 'email'
}, yourAuthenticateFunction));
Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download