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Okay, I’ve decided to write a little addition to my previous tutorial. I finished the last tutorial, my Auth library for CI, with a note:
When you use this library, you’ll have to manually adjust the standard redirects from the library. I just set them to /admin and /admin/login but this could/will be different for you offcourse. A better way would be to add an initialize() method that gets a config array passed to set these URI’s in class vars.

I have adjusted my library a little so you can initialize it, setting redirects as you please. Even more, it now automatically uses any auth.php config files too. This was really easy and I thank xwero for helping me figure it out, over at the CodeIgniter community.

All we need to do is add 2 more class variables, an extra method and let the construct expect an array. Doing this makes our library look like.

Note: I deleted functions that remained the same, so don’t just overwrite everything!

<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); class Auth { var $CI = NULL; var $index_redirect = '/admin'; var $login_redirect = '/admin/login'; function Auth($props = array()) { $this->CI =& get_instance(); // Load additional libraries, helpers, etc. $this->CI->load->library('session'); $this->CI->load->database(); $this->CI->load->helper('url'); if (count($props) > 0) { $this->initialize($props); } } /** * initialize class preferences * * @access public * @param array * @return void */ function initialize($props = array()) { if (count($props) > 0) { foreach ($props as $key => $val) { $this->$key = $val; } } } /** * * This function redirects users after logging in * * @access public * @return void */ function redirect() { if ($this->CI->session->userdata('redirected_from') == FALSE) { redirect($this->index_redirect); } else { redirect($this->CI->session->userdata('redirected_from')); } } /** * * This function restricts users from certain pages. * use restrict(TRUE) if a user can't access a page when logged in * * @access public * @param boolean wether the page is viewable when logged in * @return void */ function restrict($logged_out = FALSE) { // If the user is logged in and he's trying to access a page // he's not allowed to see when logged in, // redirect him to the index! if ($logged_out && $this->logged_in()) { redirect($this->index_redirect); } // If the user isn' logged in and he's trying to access a page // he's not allowed to see when logged out, // redirect him to the login page! if ( ! $logged_out && ! $this->logged_in()) { $this->CI->session->set_userdata('redirected_from', $this->CI->uri->uri_string()); // We'll use this in our redirect method. redirect($this->login_redirect); } } } /* End of file: Auth.php */ /* Location: application/libraries/Auth.php */

How does this work? When you load a library, the Loader class automatically scans for a config file with the same name as your class. So when we add auth.php to our config folder, we can pass the index_redirect and login_redirect variables to our library when we load it.

On one of my applications, my config file looks like this:

<?php $config['index_redirect'] = '/general'; $config['login_redirect'] = '/log/in'; /* End of file: auth.php */ /* Location: application/config/auth.php */

If you don’t like using config files, you could set that array in your method and use it when loading the Auth library, or when your autoloading the library, you could use the initialize() function.