From d8b6431aa7dcfd1ddf7c19558ccc04779921f7d3 Mon Sep 17 00:00:00 2001
From: rinsuki <428rinsuki+git@gmail.com>
Date: Mon, 25 Mar 2019 23:01:09 +0900
Subject: [PATCH] Add allowfullscreen attribute to oembed iframe (#10370)

for video player full screen button.
---
 app/serializers/oembed_serializer.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/serializers/oembed_serializer.rb b/app/serializers/oembed_serializer.rb
index 0c8350e2d2..01689633b2 100644
--- a/app/serializers/oembed_serializer.rb
+++ b/app/serializers/oembed_serializer.rb
@@ -43,6 +43,7 @@ class OEmbedSerializer < ActiveModel::Serializer
       style: 'max-width: 100%; border: 0',
       width: width,
       height: height,
+      allowfullscreen: true,
     }
 
     content_tag(:iframe, nil, attributes) + content_tag(:script, nil, src: full_asset_url('embed.js', skip_pipeline: true), async: true)