Error with sessions in CodeIgniter

Question

The following snippet is returning an error, however the error goes away when there is no SESSION.

Here is the line that is referred to by the error:

$user_id = $this->session->userdata('user_id');

Here is the class definition that the previous line is contained within:

class Dashboard extends CI_Controller
{

    public function _construct()
    {        
        parent::_construct();
        $user_id = $this->session->userdata('user_id');
        if(!user_id){
            $this->logout();
        }
    }


    public function index()
    {        
          $this->load->view('dashboard/inc/header_view');
          $this->load->view('dashboard/dashboard_view');
          $this->load->view('dashboard/inc/footer_view');
    }

    public function logout()
    {
        $this->sess_destroy();
        redirect('/');
    }

}

What am I doing wrong?

Answer 1

On your log out function

Where $this->sess_destroy(); is

Replace with $this->session->sess_destroy(); because you are missing the session

Make sure $this->load->library('session'); is loaded.

public function _construct() {        
    parent::_construct();

    $this->load->library('session'); // Or Autoload it.

    if ($this->session->userdata('user_id') == FALSE) {
        $this->logout();
    }
}