/***************************************************************************************************
     *                                       GET POST SESSION SERVER ET REQUEST                                       *
     ***************************************************************************************************/
    /**
     * permet d'utiliser les $_GET, $_POST, $_SESSION, $_SERVER et $_REQUEST dans les twigs
     * @param string $type post get request session ou server
     * @param string $var variable
     * @return string
     */
    function dollar($type, $var)
    {
        switch ($type) {
            case 'post':
                return $_POST[$var];
                break;
            case 'get':
                return $_GET[$var];
                break;
            case 'request':
                return $_REQUEST[$var];
                break;
            case 'session':
                return $_SESSION[$var];
                break;
            case 'server':
                return $_SERVER[$var];
                break;
        }
    }

{# templates/base.html.twig #}

{# ... #}
<div id="sidebar">
    {# if the controller is associated with a route, use the path() or url() functions #}
    {{ render(path('latest_articles', {max: 3})) }}
    {{ render(url('latest_articles', {max: 3})) }}

    {# if you don't want to expose the controller with a public URL,
       use the controller() function to define the controller to execute #}
    {{ render(controller(
        'App\\Controller\\BlogController::recentArticles', {max: 3}
    )) }}
</div>