flash module

AuthController.js

//
// Module Dependencies
// ==================================================================
var auth  = require('../lib/auth'),
    db    = require('../models'),
    hash  = require('../lib/hash'),
    flash = require('../lib/flash');

//
// Controller
// ==================================================================
module.exports = {

  getLogin: {
    auth: { mode: 'try' },
    plugins: { 'hapi-auth-cookie': { redirectTo: false } },
    handler: function(request, reply) {
      reply.view('auth/login', {
        //
        // FLASH
        //
        flashMessage: flash.get('flashMessage', request, reply),
        flashType: flash.get('flashType', request, reply),
      });
    }
  },

  postLogin: {
    auth: { mode: 'try' },
    plugins: { 'hapi-auth-cookie': { redirectTo: false } },
    handler: function(request, reply) {
      if (request.auth.isAuthenticated) {
        return reply.redirect('/');
      }

      var input = request.payload;

      auth.attempt({
        email: input.email,
        password: input.password,
        request: request,
        success: function() {
          reply.redirect('/app');
        },
        failure: function(err) {
          //
          // FLASH
          //
          flash.set('Oops! Email or password was incorrect', 'danger', reply);
          reply.redirect('/login');
        }
      });
    }
  }
  
  // etc etc...
  
};

flash.js

var Flash = function() {

  var self = {};

  self.get = function(name, request, reply) {
    if (request.state[name]) {
      // retrieve a base64 value
      var value = new Buffer(request.state[name], 'base64').toString('ascii');
      
      // remove the old value
      reply.state(name, '', { ttl: 0 });

      return value;
    }
    
    // if it is not set return false
    return false;
  };

  self.set = function(message, type, reply) {
    // set the necessary values
    reply.state('flashMessage', message, {
      encoding: 'base64'
    });

    reply.state('flashType', type, {
      encoding: 'base64'
    });
  };

  return self;

}

module.exports = new Flash();

login.html

{% extends "../layouts/master.html" %}

{% block content %}
  
  etc.
  
  {% if flashMessage %}
    <div class='alert alert-{{ flashType }}'>
      {{ flashMessage }}
    </div>
  {% endif %}
  
  etc.

{% endblock %}