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;
}

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