Hello,
I have been struggling to get my bearings on CI now for a few days. Things have gone fairly well. I have overcome the dust on the user guide (some outdated stuff in there) and now I am thoroughly stuck. After reading this forum for two hours I still cannot get anywhere, although this problem has been discussed before. I guess my understanding of OOP is not good enough. Well, let’s see. This is my error message:
Fatal error: Call to a member function login() on a non-object in [...]\application\controllers\pages.php on line 46
Ok. So here is “pages.php”:
<?php
class Pages extends CI_Controller {
public $data = array('subview' => 'Oops... no subview');
public function __construct() {
parent::__construct();
session_start();
$this->load->helper('url');
$this->load->helper('language');
$this->load->language('general', 'german');
}
[...]
public function signin() {
$this->load->helper('form');
$this->load->library('Form_validation');
$this->form_validation->set_rules('login_nick', 'Nick', 'required');
$this->form_validation->set_rules('login_password', 'Password', 'required');
if ($this->form_validation->run() === FALSE) {
$this->data['subview'] = 'signin';
$this->load->view('layouts/layout', $this->data);
} else {
$this->login_model->login();
$this->data['subview'] = 'success';
$this->load->view('layouts/layout', $this->data);
}
}
}
The problem is this line:
$this->login_model->login();
And finally the model file “login_model.php”:
<?php
class Login_model extends CI_Model {
function login($nick = '', $password = '') {
//Put here for PHP 4 users
$this->CI = & get_instance();
//Make sure login info was sent
if ($nick == '' OR $password == '') {
return false;
}
//Check if already logged in
if ($this->CI->session->userdata('user_nick') == $nick) {
//User is already logged in.
return false;
}
//Check against user table
$this->CI->db->where('user_nick', $nick);
$query = $this->CI->db->get_where($this->user_table);
if ($query->num_rows() > 0) {
$row = $query->row_array();
//Check against password
if (hash("512", $password) != $row['user_pw']) {
return false;
}
//Destroy old session
$this->CI->session->unset_userdata();
//Create a fresh, brand new session
$this->CI->session->sess_create();
//Remove the password field
unset($row['user_pw']);
//Set session data
$this->CI->session->set_userdata($row);
//Set logged_in to true
$this->CI->session->set_userdata(array('online' => true));
//Login was successful
$_SESSION['logged_in'] = 1;
return true;
} else {
//No database result found
$_SESSION['logged_in'] = 0;
return false;
}
}
}
As you can see (for whoever knows it), the login function is copied from the Simplelogin library, but ultimately I suspect it doesn’t matter what it says in there, since it is not accessed in the first place.
The database connection is not included, because I have this line in the autoconfig.php:
$autoload['libraries'] = array('database', 'session');
In my humble understanding, this should take care of the database connection.
What am I overlooking/messing up for getting the above mentioned error?
Thanks a bundle in advance! 
BiB