Login script: validating with own callback in library.

[eluser]Maximilian Schoening[/eluser]
Hi,
I'm writing my own auth library at the moment and ran into a problem field validation. I have my own callbacks defined however they are ignored during validation. Can somebody tell me why? Here is the login function inside my Auth.php library. I call the login function inside my controller login().

Here's the code:

Code:

/** ----------------------------------------------------------------------
* Login
**/
function login() {
    $this->CI =& get_instance();
    
    $this->CI->load->library('form_validation');
    $this->CI->load->helper('form');
    
    $this->CI->form_validation->set_rules('email', 'Email', 'trim|required|valid_email|callback__login_validate_email|callback__login_validate_password');
    $this->CI->form_validation->set_rules('password', 'Password', 'trim|required');
    
    if ($this->CI->form_validation->run() == FALSE) {
        $this->CI->view('user/login');
    }
    else {
        $user = $this->get_user(set_value('email'));
        
        $this->CI->session->sess_destroy();
        $this->CI->session->sess_create();
        
        $user_data = array(
            'user_id' => $user['id'],
            'user' => $user['email'],
            'logged_in' => TRUE
        );
        
        $this->CI->session->set_userdata($user_data);
        
        redirect('user/profile');
    }
}

function _login_validate_email($email) {
    return $this->check_email($email);
}

function _login_validate_password($password) {
    if (set_value('email') == '' OR $password == '') {
        return TRUE;
    }
    else {
        return $this->check_password(set_value('email'), $password);
    }
}
// -----------------------------------------------------------------------

/** ----------------------------------------------------------------------
* Tools
**/
function check_email($email) {
    $query = $this->CI->db->get_where('users', array('email' => $email));
    
    if ($query->num_rows() == 0) {
        return FALSE;
    }
    else {
        return TRUE;
    }
}

function check_password($email, $password) {
    $this->CI->load->library('encrypt');
    
    $query = $this->CI->db->get_where('users', array('email' => $email));
    
    if ( ! $password != $this->encrypt->decode($query->row->password)) {
        return FALSE;
    }
    else {
        return TRUE;
    }
}

function get_user($email) {
    $query = $this->CI->db->get_where('users', array('email' => $email));
    
    return $query->row_array();
}
// -----------------------------------------------------------------------

Thanks,
Max