From 49c371302cc7af89efb600c625fc2a6e6a46c139 Mon Sep 17 00:00:00 2001
From: nilsding <nilsding@nilsding.org>
Date: Sun, 28 Dec 2014 22:15:25 +0100
Subject: [PATCH] unique smiles only!

---
 app/models/smile.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/smile.rb b/app/models/smile.rb
index e94c1bd4..566c3bcc 100644
--- a/app/models/smile.rb
+++ b/app/models/smile.rb
@@ -1,7 +1,7 @@
 class Smile < ActiveRecord::Base
   belongs_to :user
   belongs_to :answer
-  validates :user_id, presence: true
+  validates :user_id, presence: true, uniqueness: { scope: :answer_id, message: "already smiled answer" }
   validates :answer_id, presence: true
 
   after_create do