From 42abc9d35b436283ea62e824a4ccefbe99c8c524 Mon Sep 17 00:00:00 2001
From: "yuuji.yaginuma" <yuuji.yaginuma@gmail.com>
Date: Sun, 7 Dec 2014 08:54:41 +0900
Subject: [PATCH] [ci skip] add `enable_extension` to PostgreSQL hstore example

---
 guides/source/active_record_postgresql.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/guides/source/active_record_postgresql.md b/guides/source/active_record_postgresql.md
index a2681a80e9..446be1c6d1 100644
--- a/guides/source/active_record_postgresql.md
+++ b/guides/source/active_record_postgresql.md
@@ -83,9 +83,12 @@ Book.where("array_length(ratings, 1) >= 3")
 
 * [type definition](http://www.postgresql.org/docs/9.3/static/hstore.html)
 
+NOTE: you need to enable the `hstore` extension to use hstore.
+
 ```ruby
 # db/migrate/20131009135255_create_profiles.rb
 ActiveRecord::Schema.define do
+  enable_extension 'hstore' unless extension_enabled?('hstore')
   create_table :profiles do |t|
     t.hstore 'settings'
   end
-- 
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