From a146858a143ab14cf1af3bda3e0705c63404c7f1 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Tue, 4 Jul 2017 14:54:38 +0200
Subject: [PATCH] Extract explaining method

---
 lib/active_file/sites/gcs_site.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/active_file/sites/gcs_site.rb b/lib/active_file/sites/gcs_site.rb
index d9164621c2f3f..71f065c6087c8 100644
--- a/lib/active_file/sites/gcs_site.rb
+++ b/lib/active_file/sites/gcs_site.rb
@@ -32,7 +32,7 @@ def byte_size(key)
   end
 
   def checksum(key)
-    file_for(key).md5.unpack("m0").first.unpack("H*").first
+    convert_to_hex base64: file_for(key).md5
   end
 
 
@@ -40,4 +40,8 @@ def checksum(key)
     def file_for(key)
       bucket.file(key)
     end
+
+    def convert_to_hex(base64:)
+      base64.unpack("m0").first.unpack("H*").first
+    end
 end