From e59b66979236c93b42467f5656da28179db1397c Mon Sep 17 00:00:00 2001 From: Sandip Ransing Date: Fri, 6 Apr 2012 00:44:56 +0530 Subject: Improvement to migration guide --- guides/source/migrations.textile | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'guides/source') diff --git a/guides/source/migrations.textile b/guides/source/migrations.textile index 28426de6d7..1d8c1e03f3 100644 --- a/guides/source/migrations.textile +++ b/guides/source/migrations.textile @@ -51,7 +51,7 @@ end This migration adds a table called +products+ with a string column called +name+ and a text column called +description+. A primary key column called +id+ will -also be added, however since this is the default we do not need to ask for this. +also be added, however since this is the default we do not need to explicitly write for this. The timestamp columns +created_at+ and +updated_at+ which Active Record populates automatically will also be added. Reversing this migration is as simple as dropping the table. @@ -65,7 +65,7 @@ class AddReceiveNewsletterToUsers < ActiveRecord::Migration change_table :users do |t| t.boolean :receive_newsletter, :default => false end - User.update_all ["receive_newsletter = ?", true] + User.update_all :receive_newsletter => true end def down @@ -635,10 +635,10 @@ example, $ rake db:migrate:up VERSION=20080906120000 -will run the +up+ method from the 20080906120000 migration. These tasks still -check whether the migration has already run, so for example +db:migrate:up -VERSION=20080906120000+ will do nothing if Active Record believes that -20080906120000 has already been run. +will run the +up+ method from the 20080906120000 migration. This task will first +check whether the migration is already performed, so for example + +db:migrate:up VERSION=20080906120000+ will do nothing if Active Record believes + that 20080906120000 has already been run. h4. Changing the output of running migrations -- cgit v1.2.3