Nette + JQuery UI datepicker

@layout.latte

<!-- nutné scripty -->
<script src="{$basePath}/vendor/jquery/dist/jquery.min.js"></script>
    
<!-- JQuery UI -->
<script src="{$basePath}/vendor/jquery-ui/jquery-ui.js"></script>
		
<!-- Konfigurace datepickeru. -->
script src="{$basePath}/vendor/jquery-ui/ui/i18n/datepicker-cs.js"></script>
<script src="{$basePath}/js/components/ui.datepicker.init.js"></script>

Filters.php

<?php

namespace App\Utils;


class Filters
{
	const STRIP_SPACES = 'App\Utils\Filters::stripSpaces';

	/**
	 * Odstraní mezery z celého řetězce.
	 */
	public static function stripSpaces($string)
	{
		return str_replace(' ', '', $string);
	}

}

FormFactory.php

<?php

use Nette\Application\UI\Form;
use App\Utils\Validators;
use App\Utils\Filters;


class AssignmentFormFactory
{

	/**
	 * @return Form
	 */
	public function create()
	{
		$form->addText('dateFrom', 'Datum počátku')
				->setAttribute('class', 'date')
				->addFilter(Filters::STRIP_SPACES)
				->addRule(Form::FILLED, "Vyplňte, prosím, datum počátku.")
				->addRule(Validators::DATE, "Zadejte platné datum počátku ve formátu den.měsíc.rok");
	}
  
}

ui.datepicker.init.js

/**
 * Oživení DatePicker inputů
 * @author MMR
 */

$.nette.ext('datepicker', {
    load: function () {
			
		$("input.date").each(function () { // input[type=date] does not work in IE
			$(this).datepicker();
		});
		
	}
});

Validators.php

<?php

namespace App\Utils;

use Nette\Forms\IControl;
use DateTime;
use Exception;


class Validators
{
	const DATE = 'App\Utils\Validators::isDate';

	/**
	 * Zkontroluje, že ze zadaného data lze vytvořit objekt DateTime.
	 * Je vyžadován tvar "d.m.Y".
	 */
	public static function isDate(IControl $control)
	{
		try {
			$arr = explode(".", $control->getValue());
			if (count($arr) === 3) {
				$d = $arr[0];
				$m = $arr[1];
				$y = $arr[2];
				if (is_numeric($d) && strlen($d) <= 2 &&
						is_numeric($m) &&  strlen($m) <= 2 &&
						is_numeric($y) &&  strlen($y) === 4
					) {
					new DateTime($control->getValue());
					return checkdate($m, $d, $y);
				}
			}
			return FALSE;
		}
		catch (Exception $e) {
			return FALSE;
		}
	}


}