1xm1k5b4

1#!/usr/bin/env ruby
2require 'dm-core'
3
4DataMapper::Logger.new($stdout, :debug)
5DataMapper.setup(:default, 'sqlite3::memory:')
6
7# dm-core/migrations.rb
8module DataMapper
9  module Migrations
10    module SingletonMethods
11      # Monkey patch to support overwriting Model.auto_migrate!
12      # so that it will be "recognized" by DataMapper.auto_migrate!
13      def auto_migrate!(repository_name = nil)
14        # original code
15        # auto_migrate_down!(repository_name)
16        # auto_migrate_up!(repository_name)
17        # patched code
18        repository_execute(:auto_migrate!, repository_name)
19      end
20    end
21  end
22end
23
24class Person
25  include DataMapper::Resource
26
27  # properties
28  property :id, Serial
29
30  def self.auto_migrate!(repository_name = self.repository_name)
31    puts "Before Person.auto_migrate!"
32    super
33  end
34  def self.auto_migrate_up!(repository_name = self.repository_name)
35    puts "Before Person.auto_migrate_up!"
36    super
37  end
38  def self.auto_migrate_down!(repository_name = self.repository_name)
39    puts "Before Person.auto_migrate_down!"
40    super
41  end
42end
43
44DataMapper.auto_migrate!
45
46__END__
47
48ree-1.8.7-2010.01 mungo:dm-snippets snusnu$ bundle exec ruby 1225.rb 
49Before Person.auto_migrate!
50Before Person.auto_migrate_down!
51 ~ (0.000051) SELECT sqlite_version(*)
52 ~ (0.000068) DROP TABLE IF EXISTS "people"
53Before Person.auto_migrate_up!
54 ~ (0.000011) PRAGMA table_info("people")
55 ~ (0.000270) CREATE TABLE "people" ("id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT)