From fa609326e691819660ae38c2db0c8fb2d336ed80 Mon Sep 17 00:00:00 2001
From: Mateus Rambo Strey <mars11@inf.ufpr.br>
Date: Thu, 19 Nov 2015 10:03:34 -0200
Subject: [PATCH] small fix in builder cache key

---
 app/builders/builder.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/builders/builder.rb b/app/builders/builder.rb
index 00973be9..2235e8b8 100644
--- a/app/builders/builder.rb
+++ b/app/builders/builder.rb
@@ -3,7 +3,9 @@ class Builder
   protected
 
   def self.cache_key(rid, last_modified)
+    last_modified = Time.at(0).to_s if last_modified.nil?
+
     rid + '/' + last_modified
   end
 
-end
\ No newline at end of file
+end
-- 
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