From 96980bd561d79824b6cb6efbcbecdcbf8785d452 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Sat, 3 May 2008 11:29:47 -0500
Subject: Added change_table for migrations (Jeff Dean) [#71 state:resolved]

---
 activerecord/README | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'activerecord/README')

diff --git a/activerecord/README b/activerecord/README
index 7204b44ec4..ff3f55ee8a 100755
--- a/activerecord/README
+++ b/activerecord/README
@@ -164,6 +164,28 @@ A short rundown of the major features:
     ActiveRecord::Base.logger = Log4r::Logger.new("Application Log")
 
 
+* Database agnostic schema management with Migrations
+
+    class AddSystemSettings < ActiveRecord::Migration
+      def self.up
+        create_table :system_settings do |t|
+          t.string  :name
+          t.string  :label
+          t.text  :value
+          t.string  :type
+          t.integer  :position
+        end
+
+        SystemSetting.create :name => "notice", :label => "Use notice?", :value => 1
+      end
+
+      def self.down
+        drop_table :system_settings
+      end
+    end
+
+  {Learn more}[link:classes/ActiveRecord/Migration.html]
+
 == Simple example (1/2): Defining tables and classes (using MySQL)
 
 Data definitions are specified only in the database. Active Record queries the database for 
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