Composing presenters without inheritance

composing.presenters.php

<?php

// composing presenters without inheritance
// (requires nette/application 2.4.11)


trait RequireLoggedUser
{
	public function injectRequireLoggedUser()
	{
		$this->onStartup[] = function () {
			if (!$this->getUser()->isLoggedIn()) {
				$this->redirect('Sign:in', $this->storeRequest());
			}
		};
	}
}


trait AdminLayout
{
	public function injectLayout(Model $model)
	{
		$this->onStartup[] = function () use ($model) {
			$this->layout = 'admin.layout';
			$this->template->menu = $model->getMenu();
		};
	}
}


class DashboardPresenter extends Nette\Application\UI\Presenter
{
	use RequireLoggedUser;
	use AdminLayout;
}


class SignPresenter extends Nette\Application\UI\Presenter
{
	use AdminLayout;
}

Myslím, že ani ty traity nejsou nutné:

abstract class Presenter extends \Nette\Application\UI\Presenter
{
	public function registerOnStartup(callable $action)
	{
		$this->onStartup[] = $action;
	}
}


class PresenterPermissionsChecker
{
	/**
	 * @var User
	 */
	private $user;
	
	public function __construct(User $user)
	{
		$this->user = $user;
	}
	
	public function checkPermissions(Presenter $presenter)
	{
		if (!$this->user->isLoggedIn()) {
			$presenter->redirect('Sign:in', $presenter->storeRequest());
		}
	}
}


class AdminLayoutInitializer
{
	/**
	 * @var Model
	 */
	private $model;


	public function __construct(Model $model)
	{
		$this->model = $model;
	}

	public function initializeAdminLayout(Presenter $presenter)
	{
		$presenter->setLayout('admin.layout');
		$presenter->getTemplate()->menu = $this->model->getMenu();
	}
}


class DashboardPresenter extends Presenter
{
}


class SignPresenter extends Presenter
{
}

services:
	- PresenterPermissionsChecker
	- AdminLayoutInitialized

	-
		class: DashboardPresenter
		setup:
			- registerOnStartup([@PresenterPermissionsChecker, checkPermissions])
			- registerOnStartup([@AdminLayoutInitialized, initializeAdminLayout])

	-
		class: SignPresenter
		setup:
			- registerOnStartup([@AdminLayoutInitialized, initializeAdminLayout])

My solution would be marker interfaces or doctrine annotations on presenters and Symfony subscribers (using contributte dispatcher) to handle it.