// routes/web.php
Route::get('/', 'PostController@index');
Route::get('posts/{post}', 'PostController@show');

// controllers/PostController.php
namespace App\Http\Controllers;
use App\Post;
class PostController extends Controller
{
    public function index()
    {
        $posts = Post::latest()->get();
        return view('posts.index', compact('posts'));
    }

    public function show(Post $post)
    {
        return view('posts.show', compact('post'));
    }
}

// application/config/routes.php
$routes['(:any)'] = 'pages/view/$1';

// application/controllers/Pages.php
class Pages extends CI_Controller
{
    public function view($page = 'home')
    {
        $this->load->view('templates/header');
        $this->load->view($page);
        $this->load->view('templates/footer');
    }
}