Move twig global value as twig extension

Author: pgrimaud

src/Twig/EnvExtension.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Twig;
+
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class EnvExtension extends AbstractExtension
+{
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('getenv', 'getenv'),
+        ];
+    }
+}

templates/bundles/NelmioApiDocBundle/SwaggerUi/index.html.twig

@@ -12,6 +12,8 @@
     {{ parent() }}
     <script src="{{ asset('js/override.js') }}"></script>
 
+    {% set ga_tracking = getenv('ANALYTICS_ID') %}
+
     {% if ga_tracking %}
         {% include 'api/analytics.html.twig' %}
     {% endif %}