title: Flash message is not display on handlerbar template using node js with passport js
body: <p>I am trying to show message in handlebar template using connect-flash package but message is not showing and its print count when i use {{loginMessage}} in login page. but not display message.
   here is my code </p>
  
  <p>file..routes/index.js</p>
  
  <pre><code> var express =  require('express');
   var router =   express.Router();
   var mongoose = require('mongoose');
   var flash =    require('connect-flash');
   const m_db =   require('.././config/mongo_connection');
   var Site =     require('.././models/site');
   var User = require('../models/user');
   var bcrypt   = require('bcrypt-nodejs');
   var passport = require('passport');
   var LocalStrategy = require('passport-local').Strategy;
   require('.././config/passport')(passport);
   //routes start here
   router.get('/login', function(req, res, next) {    
   res.render('passports/login.hbs', { message:   req.flash('loginMessage','failed login') });
  </code></pre>
  
  <p>})</p>
  
  <p>my app.js</p>
  
  <pre><code>  app.use(require('express-session')({
    secret: 'keyboard cat',
    resave: false,
    saveUninitialized: false
  }));
    app.use(flash());
   //
    app.use(passport.initialize());
    app.use(passport.session());
    app.use(express.static(path.join(__dirname, 'public')));
   // passport config
  
   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('/', index);
   app.use('/users', users);
   app.use('/api', api);
  
   // 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 handler
    app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};
  
    // render the error page
    res.status(err.status || 500);
    res.render('error');
   });
    module.exports = app;
  </code></pre>
  
  <p>Please help!
  Thanks!</p>