From 2625c3bb9a445f8a59817dfc40230d1c4310d5e7 Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Wed, 6 May 2015 07:12:38 +1000
Subject: [PATCH] avoid work if nothing there

---
 app/models/stylesheet_cache.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/app/models/stylesheet_cache.rb b/app/models/stylesheet_cache.rb
index c123e8aad..152db2484 100644
--- a/app/models/stylesheet_cache.rb
+++ b/app/models/stylesheet_cache.rb
@@ -4,6 +4,9 @@ class StylesheetCache < ActiveRecord::Base
   MAX_TO_KEEP = 10
 
   def self.add(target,digest,content)
+
+    return false if where(target: target, digest: digest).exists?
+
     success = create(target: target, digest: digest, content: content)
 
     count = StylesheetCache.count
@@ -20,8 +23,6 @@ class StylesheetCache < ActiveRecord::Base
     success
   rescue ActiveRecord::RecordNotUnique
     false
-  rescue PG::UniqueViolation
-    false
   end
 
 end