From 9d52b45a5b8ccf8744c1b05d70bd00831cb87526 Mon Sep 17 00:00:00 2001
From: Thiago Almeida <tapgyn@gmail.com>
Date: Fri, 16 Mar 2012 01:14:24 -0300
Subject: [PATCH] relation .present? and .blank? should not query SELECT
 COUNT(DISTINCT id)

---
 activerecord/lib/active_record/relation.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index 6f39708ec3..ae2dc6872a 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -507,6 +507,10 @@ module ActiveRecord
       end
     end
 
+    def blank?
+      to_a.blank?
+    end
+
     private
 
     def references_eager_loaded_tables?