Passport local authentication is not working - node.js

Question

I am building app using MEAN STACK. I want to use passport-local authentication for my login form. But a the time of form submission i am getting POST http://localhost/login 404 (Not Found) please have a look of my code below This is my controller:
lyfee.controller('loginCtrl', ['$scope', '$http', function($scope, $http) {
$scope.user = {};
$scope.login = function() {
// var data = {User: $scope.user }
//console.log($scope.user);
console.log("login function call");
$http.post('/login', $scope.user);
console.log("login request send");
}
}]);
and this is my server.js :
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
passport.use(new LocalStrategy(
function(username, password, done) {
User.getUserByusername(username, function(err, user) {
if (err) throw err;
if (!user) {
return done(null, false, {
message: 'Unknown USER'
});
}
User.comparePassword(password, user.password, function(err, isMatch) {
if () throw err;
if (isMatch) {
return done(null, user);
} else {
return done(null, false, {
message: 'Invalid password'
});
}
});
});
}));
app.post('/login',
passport.authenticate('local', {
successRedirect: '/',
failureRedirect: '/login',
failureFlash: true
}),
function(req, res) {
res.redirect('/');
});
in which file should i write getUserByusername and comparePassword function ? and what is mistake i am doing please correct it and give me some suggestion.

Answer 1

In your model suppose that User.js write functions like this:
/**
* Check the user's password
*/
dbSchema.methods.comparePassword = function(candidatePassword, cb) {
var status = this.password.localeCompare(candidatePassword.trim());
if (status != 0) {
return cb(err);
}
cb(null, true);
};
then use the function like this
passport.use(new LocalStrategy(
function(username, password, done) {
User.findOne({
username: username
}, function(err, user) {
if (err) throw err;
if (!user) {
return done(null, false, {
message: 'Unknown USER'
});
}
/**
* Check the user's password
*/
User.comparePassword(password, user.password, function(err, isMatch) {
if (err) throw err;
if (isMatch) {
return done(null, user);
} else {
return done(null, false, {
message: 'Invalid password'
});
}
});
});
}));