public function do_login() {
        if ($this->session->userdata('is_admin_login')) {
            redirect('admin/home/dashboard');
        } else {
            $user = $_POST['username'];
            $password = $_POST['password'];

            $this->form_validation->set_rules('username', 'Username', 'required');
            $this->form_validation->set_rules('password', 'Password', 'required');

            if ($this->form_validation->run() == FALSE) {
                $this->load->view('admin/vwLogin');
            } else {
                $salt = '5&JDDlwz%Rwh!t2Yg-Igae@QxPzFTSId';
                $enc_pass  = md5($salt.$password);
                $sql = "SELECT * FROM tbl_admin_users WHERE username = ? AND password = ?";
                $val = $this->db->query($sql,array($user ,$enc_pass ));

                if ($val->num_rows) {
                    foreach ($val->result_array() as $recs => $res) {
                        $sess_array = array(
                            'id' => $res['id'],
                            'username' => $res['username'],
                            'email' => $res['email'],
                            'is_admin_login' => true,
                            'user_type' => $res['user_type']
                            );
                        $this->session->set_userdata($sess_array);
                    }
                    redirect('admin/dashboard');
                } else {
                    $err['error'] = '<strong>Access Denied</strong> Invalid Username/Password';
                    $this->load->view('admin/vwLogin', $err);
                }
            }
        }
    }

if (!defined('BASEPATH'))
    exit('No direct script access allowed');

class Dashboard extends CI_Controller {

    public function __construct() {
        parent::__construct();
        $this->load->library('form_validation');
        dump_exit($this->session->userdata);
        if (!$this->session->userdata('is_admin_login')) {
            redirect('admin/home');
        }
    }

    public function index() {
        $arr['page']='dash';
        $this->load->view('admin/vwDashboard',$arr);
    }

}

$autoload['libraries'] = array('database', 'session', 'form_validation');
$autoload['helper'] = array('url', 'form', 'dump');