membedakan halaman admin dengan user ?

yang baik hati tolong dibantu :(

disini saya menggunakan framework codeigniter bagaimana caranya agar web pada admin dapat dipisah pisah struktur header,content,footer sama dengan tampilan pada user seperti ini :

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

class Halaman extends CI_Controller {

	public function __construct(){
		parent::__construct();
		// $this->load->model('news_model');
		$this->load->helper('url_helper');
		$this->load->helper('text');
	}

	public function index()
	{
		$this->load->view('welcome_message');

	}

  public function view($halaman='content'){
      if(!file_exists(APPPATH."views/pages/".$halaman.'.php')){
        show_404();
      }
      $data['judul'] = $halaman;

      $this->load->view('templates/header',$data);
      $this->load->view('pages/'.$halaman);
      $this->load->view('templates/footer');
  }

}

apakah harus disetting melalui routes? saya masih newbie menggunakan framework codeigniter tolong dong agan agan mastahhhhhh dibantu:(

ini kodingan routes :

$route['news/delete/(:any)']='news/delete/$1';
$route['news/update/(:any)']='news/update/$1';
$route['news/create']='news/create';
// $route['admin']='admin';
$route['admin/create']='admin/create';

$route['news']='news';
$route['news/(:any)']='news/view/$1';

$route['default_controller'] = 'halaman/view';
$route['(:any)'] = 'halaman/view/$1';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;

terimakasih banyak