instanceof twig test - SF 5

README.md

This extention check for instance object. It check if $object is a real object before reflect the clas itself.

extension.php

<?php

namespace App\Twig;

use Twig\Extension\AbstractExtension;
use Twig\TwigTest;

class InstanceOfExtension extends AbstractExtension
{
     public function getTests()
    {
        return array(
            new TwigTest('instanceof', array($this, 'isInstanceOf'))
        );
    }

    public function isInstanceOf($object, $class)
    {
        if (!is_object($object)) {
            return false;
        }

        $reflectionClass = new \ReflectionClass($class);

        return $reflectionClass->isInstance($object);
    }
}

use.html.twig

{% if object is instanceof('Acme\\Foo\\Entity') %}
    <p>true</p>
{% else %}
    <p>false</p>
{% endif %}