Twig Filter

CourseExtension.php

<?php

namespace Afj\CourseBundle\Twig;

use Afj\CourseBundle\Util\DateUtil;

class CourseExtension extends \Twig_Extension
{
    public function getName()
    {
        return 'Course';
    }   

    public function getFilters()
    {
        return array(
            'ago' => new \Twig_Filter_Method($this, 'ago'),
            //'ago' => new \Twig_Filter_Method('Afj\CourseBundle\Util\DateUtil', 'ago'),
        );
    }

    public function ago(\DateTime $date)
    {
        return DateUtil::ago($date);
    }
    
}