Howto make a login/auth .. thing ;)

[eluser]DynamiteN[/eluser]
okey, so now i have managed to get somewhere i trhew out the modules for now so that i can focus on this login auth thing
so i found a really easy tut over at bramme.net, and stripped some of it so that i can make it my own and build on it

libraries/auth.php :

Code:

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

class Auth {

    var $CI = NULL;

    function __construct() {
        $this->CI =& get_instance();
        $this->CI->load->library('session');
        $this->CI->load->database();
        $this->CI->load->helper('url');
    }

    function process_login($login = NULL) {
        // A few safety checks
        // Our array has to be set
        if(!isset($login))
            return FALSE;
            
        //Our array has to have 2 values
        //No more, no less!
        if(count($login) != 2)
            return FALSE;
        

        $username = $login[0];
        $password = $login[1];
        
        if($this->CI->member_model->checkLogin($username, $password)){
            $this->CI->session->set_userdata('logged_user', $username);
            return TRUE;
        }

    }

    function logged_in() {
        if ($this->CI->session->userdata('logged_user') == FALSE) {
            return FALSE;
        }else{
            return TRUE;
        }
    }
    
    /**
     * Logs user out by destroying the session.
     */    
    function logout()
    {
        $this->CI->session->sess_destroy();
        
        return TRUE;
    }
    
}

/* End of file: Auth.php */
/* Location: ./system/application/libraries/Auth.php */

and the member_model that does the query

models/member_model.php :

Code:

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed'); ?>
<?php
/**
* Ci Model Class(Constructor)
*
* @package default
* @author DynamiteN
**/
class Member_model extends Model {

    function __construct(){
        parent::Model();
        
    }
    
    function checklogin($username, $password) {
        // Query time
        $this->db->where('username', $username);
        $this->db->where('password', $password);
        $query = $this->db->get('members');
        
        if ($query->num_rows() == 1) {
            // Our user exists, set session.
            return TRUE;
        }else{
            // No existing user.
            return FALSE;
        }
    }

}

and then i put this in my controller
controllers/site.php :

Code:

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

class Site extends Controller {
    
    function __construct() {
        parent::Controller();
        $this->auth->logged_in();
    }
    
    function index() {
        
        $data['heading'] = "Main View";
        $this->load->view('main_view', $data);
    }
    
    function showlogin() {
        
        $data['heading'] = "Login";
        $this->load->view('login_view', $data);
    }
    
    
    function login() {

        $this->form_validation->set_rules('username', 'Username', 'required');
        $this->form_validation->set_rules('password', 'Password', 'required');
        
        if ($this->form_validation->run() == FALSE) {
            $data['heading'] = "Login";
            $this->load->view('login_view', $data);
        }else{
            $login = array(
                $this->input->post('username'),
                 md5($this->input->post('password'))
                 );
            if($this->auth->process_login($login)) {
                $this->index();
            }
        }
    }
    
    function logout() {
     if($this->auth->logout())
        redirect('/site/login');
    }
}

and it works... sort of...
when i go login enter username and password it processes it and i go back to the index function (first page)
and in my header view i have put this

Code:

<?php if($this->auth->logged_in()) : ?>
    <div id="user">
    
    <a href="#username" class="username"> &lt;?php echo $this->session->userdata('username'); ?&gt;</a>        
    <a href="site/logout" class="logout"> LOGOUT </a>
       </div>
&lt;?php else: ?&gt;
<div id="guest">
    <a href="site/showlogin" class="login"> LOGIN </a>
</div>
&lt;?php endif; ?&gt;

the problem is that i cant get it to show the username of the logged in person.

When i am logged out i only see the login link.
And when i am logged in i se my logout button, but i do not know what to do to make the username and stuff show :/
any help on this would be really helpful

P.S i also tried to have the session stored in database but no change in the result, works exactly the same ...