Register Twig Extension in Symfony

问题

I want to use nochso/html-compress-twig extension to compress all html, inline css and js.But it is the first time that I register a new extension on Twig and I am bit confused about where I should add the following lines in my project:

$twig = new Twig_Environment($loader);
$twig->addExtension(new \nochso\HtmlCompressTwig\Extension());

I was reading the Twig's documentation but it didn't helped me much as they put the same example and just add the following:

Twig does not care where you save your extension on the filesystem, as all extensions must be registered explicitly to be available in your templates.

You can register an extension by using the addExtension() method on your main Environment object:

I only want enable the extension globally and be able to use {% htmlcompress %}{% endhtmlcompress %} in any twig template

回答1:

You can register your twig extension as a tagged service this way:

services:
    htmlcompress:
        class: '\nochso\HtmlCompressTwig\Extension'
        tags:
            - { name: twig.extension }

回答2:

To enable a Twig extension, add it as a regular service... http://symfony.com/doc/current/reference/dic_tags.html#twig-extension

来源：https://stackoverflow.com/questions/46741728/register-twig-extension-in-symfony