1: index.php

<?php

$router = (new Nether\Router)
->AddRoute('{@}//post/(#)','Routes\Post::ViewByID')
->AddRoute('{@}//admin/post(#)','Routes\Admin\Post::ViewByID');

try { $router->Run(); }
catch(...) { }
catch(...) { }
catch(...) { }

2: Routes\Post.php

<?php

namespace Routes;
use \Nether;

class Post
extends Nether\Avenue\PublicAPI {
	
	public function
	ViewByID($id) {
		// ...
	}

}

3a: Routes\Admin\Post.php

<?php

namespace Routes\Admin;
use \Nether;

// if admin view is vastly different.

class Post
extends Nether\Avenue\PrivateAPI {
	
	public function
	ViewByID($id) {
		// ...
	}
	
}

3b: Routes\Admin\Post.php

<?php

namespace Routes\Admin;
use \Routes;

// if admin view is almost the same.

class Post
extends Routes\Post {
	
	public function
	ViewByID($id) {
		$this->RequireAdmin();
		// ...
		
		return parent::ViewByID($id);
	}
	
}