node/express session to pass an object to the view - node.js

Question

I have this post login that stores an object in req.locals.user.
var router = express.Router();
var User = require('../models/user');
var Company = require('../models/company');
/* GET home page. */
router.get('/', function(req, res) {
res.render('users/login');
});
router.post('/users/login', function(req, res){
var email = req.body.email;
var password = req.body.password;
User.find({email: email, password: password}, function(err, user){
if(user.length == 0)
{
//user wasn't found
res.render('users/login', {validation: "Invalid Email Or Password"})
}
else
{
//user was found set session and local objects
req.session.user = user;
res.locals.user = user;
res.redirect('/dashboard');
}
});
});
my problem is that when I redirect the user to the dashboard. I get an error message saying that my object is undefined.
<h1 class="page-header">Dashboard v2 <small><%=user.firstName%>.</small></h1>
app.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var moment = require('moment');
var session = require('express-session');
var dashboard = require('./routes/dashboard');
var users = require('./routes/users');
var categories = require('./routes/categories');
var products = require('./routes/products');
var sales = require('./routes/sales');
var companies = require('./routes/companies');
var app = express();
// set locals
app.locals.moment = moment;
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({resave: true, saveUninitialized: true, secret:"mySecretString"}));
app.use(function(req,res,next){
res.locals.user = req.session.user;
delete req.session.user;
next();
}
app.use('/', dashboard);
app.use('/', users);
app.use('/', categories);
app.use('/', products);
app.use('/', sales);
app.use('/', companies);
app.use(function(req, res, next){
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Headers", "api_key");
if(req.method == 'OPTIONS') {
res.send(200);
}
else {
next();
}
});
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
mongoose.connect('mongodb://localhost/test');
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
How do I pass my object globally between my views ?

Answer 1

Problem because res.locals.user will be remove when you redirect (next request). Only req.session exists.
For set variable to next request. You need a middleware to set session to locals again
app.use(function(req,res,next){
res.locals.user = req.session.user;
delete req.session.user;
next();
});