gistfile1.txt

<?php

/**
 * Homepage presenter.
 */
class HomepagePresenter extends BasePresenter
{
        public function __construct(\Nette\Http\Session $session)
	{
		parent::__construct();
		$this->session = $session;

		$config = new PersistentModel($session);
		$config->preparePresenter($this);
	}

	public function __destruct()
	{
		$config = new PersistentModel($this->session);
		$config->savePersistents($this);
	}
}

persistentModel.php

<?php

class PersistentModel extends Nette\Object
{
	/**
	 * @var Nette\Http\Session
	 */
	protected $session;

	/**
	 * @var Nette\Http\SessionSection
	 */
	protected $section;

	/**
	 * @param Nette\Http\Session $session
	 */
	public function __construct(\Nette\Http\Session $session)
	{
		$this->session = $session;
		$this->section = $this->session->getSection('defaults');
	}

	/**
	 * @param Nette\Application\IPresenter $presenter
	 */
	public function preparePresenter(\Nette\Application\UI\PresenterComponent $presenter)
	{
		/**
		 * 1) Nedefaultní hodnota z url
		 * 2) Hodnota se session
		 * 3) Default hodnota presenteru
		 */

		foreach($presenter->getPersistentParams() as $per)
		{
			$def = 	$presenter->reflection->defaultProperties[$per];

			if($presenter->$per !== $def) continue;

			$sesVal = $this->section->$per;
			if(isset($sesVal)) {
				$presenter->$per = $sesVal;
			}
		}
	}

	public function savePersistents(\Nette\Application\UI\PresenterComponent $presenter)
	{
		foreach($presenter->getPersistentParams() as $per)
		{
			$def = $presenter->reflection->defaultProperties[$per];

			if($presenter->$per !== $def) {
				$this->section->$per = $presenter->$per;
			} else {
				unset($presenter->$per);
			}
		}
	}
}