<?php 

// jako cela trida, bez zavislosti

namespace petrjirasek\Latte;

use Nette\Object;


class AbsFilter extends Object
{

    /**
     * @param int $number
     * @return int
     */
    public function __invoke($number)
    {
        return abs($number);
    }
}




// PRESENTER

use petrjirasek\Latte\AbsFilter;

protected function beforeRender()
{
    $this->template->addFilter('abs', new AbsFilter);
}