twig - pass function into template

Question

Currently I place my function in a class and pass an instance of this class into template and call my required function as a class method.

{{ unneededclass.blah(         


        

Answer 1

Full answer: http://twig.sensiolabs.org/doc/advanced.html#id2

I prefer to use Twig Extension like this:

namespace Some\Twig\Extensions;

class MenuExtensions extends \Twig_Extension
{
    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction('sidebar_menu', [$this, 'generate_sidebar_menu']),
        );
    }

    public function generate_sidebar_menu($menu){
        return $menu;
    }

    public function getName()
    {
        return 'menu';
    }
}

In template:

{{ sidebar_menu('some text') }}