Added SpeakerDeckExtension

src/AppBundle/Twig/SpeakerDeckExtension.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace AppBundle\Twig;
+
+use Twig_Extension;
+use Twig_SimpleFunction;
+
+class SpeakerDeckExtension extends Twig_Extension
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions()
+    {
+        return [
+            new Twig_SimpleFunction('speakerdeck', [$this, 'embedCode']),
+        ];
+    }
+
+    public function embedCode($dataId, $dataRatio)
+    {
+//        <script async class="speakerdeck-embed" data-id="0041804e52664d12a8e31cd118264813" data-ratio="1.77777777777778" src="//speakerdeck.com/assets/embed.js"></script>
+        return sprintf(
+            '<script async class="speakerdeck-embed" data-id="%s" data-ratio="%s" src="//speakerdeck.com/assets/embed.js"></script>',
+            $dataId,
+            $dataRatio
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'speakerdeck';
+    }
+
+}