Useful Developper Extensions for Codeigniter

A- Remove index.php from subfolders

After loading library in construct home controller :

$this->load->helper('url');

I noticed that redirection shows index.php in subfolder URLs although the .htaccess rewriting that seems to works for root level only. The best solution to get rid off index.php in CodeIgniter URI is to go into application/config/config.php and blank out the index page config value as following :

// Old
$config['index_page'] = "index.php";

// New
$config['index_page'] = ""; 

CI uses that to create urls when you’re using site_url, redirect, anchor, form_open and other functions that generate urls.

B- Organize CodeIgniter in subfolders :

Recently, I wanted to organize the controllers of a CodeIgniter instance into sub-sub folders. I noticed that By default, CodeIgniter only allows routing to one level sub folders in the controller directory :
You will need to extend the core Router class of CodeIgniter. All you have to do is add one file, application/core/MY_Router.php:

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/*
    Extended the core Router class to allow for sub-sub-folders in the controllers directory.
*/
class MY_Router extends CI_Router {

    function __construct()
    {
        parent::__construct();
    }

    function _validate_request($segments)
    {
        if (count($segments) == 0)
        {
            return $segments;
        }

        // Does the requested controller exist in the root folder?
        if (file_exists(APPPATH.'controllers/'.$segments[0].'.php'))
        {
            return $segments;
        }

        // Is the controller in a sub-folder?
        if (is_dir(APPPATH.'controllers/'.$segments[0]))
        {
            // Set the directory and remove it from the segment array
            $this->set_directory($segments[0]);
            $segments = array_slice($segments, 1);

            while (count($segments) > 0 && is_dir(APPPATH.'controllers/'.$this->directory.$segments[0]))
            {
                // Set the directory and remove it from the segment array
                $this->set_directory($this->directory . $segments[0]);
                $segments = array_slice($segments, 1);
            }

            if (count($segments) > 0)
            {
                // Does the requested controller exist in the sub-folder?
                if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].'.php'))
                {
                    if ( ! empty($this->routes['404_override']))
                    {
                        $x = explode('/', $this->routes['404_override']);

                        $this->set_directory('');
                        $this->set_class($x[0]);
                        $this->set_method(isset($x[1]) ? $x[1] : 'index');

                        return $x;
                    }
                    else
                    {
                        show_404($this->fetch_directory().$segments[0]);
                    }
                }
            }
            else
            {
                // Is the method being specified in the route?
                if (strpos($this->default_controller, '/') !== FALSE)
                {
                    $x = explode('/', $this->default_controller);

                    $this->set_class($x[0]);
                    $this->set_method($x[1]);
                }
                else
                {
                    $this->set_class($this->default_controller);
                    $this->set_method('index');
                }

                // Does the default controller exist in the sub-folder?
                if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$this->default_controller.'.php'))
                {
                    $this->directory = '';
                    return array();
                }

            }

            return $segments;
        }


        // If we've gotten this far it means that the URI does not correlate to a valid
        // controller class.  We will now see if there is an override
        if ( ! empty($this->routes['404_override']))
        {
            $x = explode('/', $this->routes['404_override']);

            $this->set_class($x[0]);
            $this->set_method(isset($x[1]) ? $x[1] : 'index');

            return $x;
        }


        // Nothing else to do at this point but show a 404
        show_404($segments[0]);
    }

    function set_directory($dir)
    {
        // Allow forward slash, but don't allow periods.
        $this->directory = str_replace('.', '', $dir).'/';
    }

}

/* End of file MY_Router.php */
/* Location: ./application/core/MY_Router.php */

That’s it! CodeIgniter will automatically include this file and instantiate the class within. You should now be able to organize your controllers into as many sub folders, sub sub folders, sub sub sub folders, etc. as you like.