nice referral link

[eluser]drewbee[/eluser]
I actually had a requirement for this, except for the fact that it could be attached to ANY uri. Obviously i wasn't going to hard code this into every controller.

I used the pre_controller hook to handle this situation as well as cookies.

Pre Controller hook: (note: most of CI is not intiallized by this point, so we just have to do some good old fashion PHP'in here);

Code:

if (isset($_GET['refid'))
{
    setcookie('refid', $_GET['refid'], strtotime('3 months'), '', '/');
    // We have to unset the get variable so codeigniter doesn't freakout about it
    unset($_GET['refid']);
}

Now anywhere in our application we can simply retrieve the cookie data as needed.

As well, any page can now be used as a referal page.

/controller/method/param/param.html?refid=drewbee

/controller.html?refid=drewbee

etc.