twigTombstone

gistfile1.txt

class TwigExtension extends \Twig_Extension
{
    // ....

    public function getFunctions()
    {
        return array(
            new \Twig_SimpleFunction(
                'tombstone',
                array($this, 'twigTombstone'),
                array('needs_environment' => true)
            ),
        );
    }

    public function twigTombstone(\Twig_Environment $env, $date, $author, $label = ''): void
    {
        if ($label) {
            $label .= ' ';
        }
        $label .= $this->getTwigTemplateName();
        tombstone($date, $author, $label);
    }

    /**
     * Return Twig-template-filename:lineno, if we can find it
     *
     * @see https://stackoverflow.com/a/44648744/6216
     */
    private function getTwigTemplateName(): string
    {
        foreach (debug_backtrace() as $trace) {
            if (isset($trace['object'])
                 && (strpos($trace['class'], 'TwigTemplate') !== false)
                 && 'Twig_Template' !== get_class($trace['object'])
            ) {
                return $trace['object']->getTemplateName() . ":{$trace['line']}";
            }
        }
        return '';
    }
}