title: Cannot get user id from session in tank auth codeigniter
body: <p>I have the controller</p>
  
  <pre><code>&lt;?php if (!defined('BASEPATH')) exit('No direct script access allowed');
  error_reporting(E_ALL);
  ini_set('display_errors', 1);
  class Response extends CI_Controller
  {
      function __construct()
      {
          parent::__construct();
          $this-&gt;load-&gt;library('tank_auth');
  
      }
  
      function index()
      {
          $status = $this-&gt;input-&gt;post('status');
          $data['amount'] = $this-&gt;input-&gt;post('amount');
          $data['orderID'] = $this-&gt;input-&gt;post('orderID');
          $data['mobileNo'] = $this-&gt;input-&gt;post('mobileNo');
          $data['email'] = $this-&gt;input-&gt;post('email');
              echo "userid is".$this-&gt;tank_auth-&gt;get_user_id();
      }
   }
  </code></pre>
  
  <p>Im posting some values into the controller after it is done,im trying to get the user id from the session which Im not able to get using tank auth.This is working in other controllers im having
  Please help</p>