I'm a novice with Code Igniter and I'm currently building my own user system. I'm curretly on the login process and I have implemented a check for whether a user is currently logged in or not.
In my header I then want to display a link to 'Log Out' if they are already logged in, or 'Log In' if they are not logged in currently.
I have a working function in my index controller as follows, the $loginstatus variable is sent to the my page header view:
function check_session()
{
//Check session status
$session = $this->session->userdata('login_state');
$default = "Log In";
if ($session == 1)
{
$url = site_url('index.php/users/logout');
$status = "Log Out";
}
else
{
$url = site_url('index.php/users/login');
$status = $default;
}
$loginstatus = array(
"url" => $url,
"status" => $status
);
return $loginstatus;
}
Because it is currently only in the index controller the $loginstatus is not generated for the header view for other pages and this is my problem.
Where would I put this function so that it always loads before my header? I tried creating a libary with a 'Common' class and then autoloading that but I ended up with lots of problems.
Thanks in advance.
If you are using CI version bellow 2.0 then create new class in application/libraries/MY_Controller.php, otherwise in application/core/MY_Controller.php and all of your application controllers should extend from it. In this class in the __construct method you will check for the login status and send it to the views.
class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //Get the status which is array $login_status = $this->check_session(); //Send it to the views, it will be available everywhere //The "load" refers to the CI_Loader library and vars is the method from that library. //This means that $login_status which you previously set will be available in your views as $loginstatus since the array key below is called loginstatus. $this->load->vars(array('loginstatus' => $login_status)); } protected function check_session() { //Here goes your function } }
Also make sure your application controllers extend from this class
//application/controllers/index.php class Index extends MY_Controller { public function __construct() { parent::__construct(); } }
In your views you can do this: <a href="<?php echo $loginstatus['url']; ?>"><?php echo $loginstatus['status']; ?></a>
This is possible cause the CI_Loader vars() method is doing extract to the parameters passed to it.