Filter's dont work

Correct if you apply a Filter to a group from what I have done it doe's apply to all routes under that group.

My english is poor i understand   , therefore in ci 3 with few row inside the construct :

if(!isset($_SESSION['is_admin'])){
redirect('/admin/login', 'refresh');
}


now i must write a row for every controller's method....

use controller filter for that, no need to duplicate the check on each methods

documentation link = https://codeigniter.com/user_guide/incom...ght=filter

watch for tutorial here = https://www.youtube.com/watch?v=5DLgPldkQxc&t=774s