■ [Rails] 3.0 betaを試してみる(3) rake rails:upgrade:check

間が空いちゃったけど、前回の続き。

まずは、rake rails:upgrade:checkでチェックしてみよう。

% rvm 1.8.7%rails235   (Rails-2.3.5環境で実施)
% rake rails:upgrade:check
(in /home/mutoh/dev/git/gettext_rails/sample_rails3)
Old gem bundling (config.gems)
The old way of bundling is gone now.  You need a Gemfile for bundler.
More information: http://omgbloglol.com/post/353978923/the-path-to-rails-3-approaching-the-upgrade
 
The culprits: 
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/config/environment.rb
 
Soon-to-be-deprecated ActiveRecord calls
Methods such as find(:all), find(:first), finds with conditions, and the :joins option will soon be deprecated.
More information: http://m.onkey.org/2010/1/22/active-record-query-interface
 
The culprits: 
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/app/controllers/articles_controller.rb
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/app/helpers/articles_helper.rb
 
Old router API
The router API has totally changed.
More information: http://yehudakatz.com/2009/12/26/the-rails-3-router-rack-it-up/
 
The culprits: 
	- config/routes.rb
 
Deprecated test_help path
You now must require 'rails/test_help' not just 'test_help'.
More information: http://weblog.rubyonrails.org/2009/9/1/gem-packaging-best-practices
 
The culprits: 
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/test/test_helper.rb
 
New file needed: config/application.rb
You need to add a config/application.rb.
More information: http://omgbloglol.com/post/353978923/the-path-to-rails-3-approaching-the-upgrade
 
The culprits: 
	- config/application.rb
 
Deprecated constant(s)
Constants like RAILS_ENV, RAILS_ROOT, and RAILS_DEFAULT_LOGGER are now deprecated.
More information: http://litanyagainstfear.com/blog/2010/02/03/the-rails-module/
 
The culprits: 
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/app/controllers/application_controller.rb
	- /home/mutoh/dev/git/gettext_rails/sample_rails3/app/models/article.rb

むぅ。いっぱいあるのぅ。

■ [Rails] 3.0 betaを試してみる(4) rake rails:upgrade:backup

とりあえず先ほどのチェック結果は後で勉強することにして、まずはバックアップを取っておく。

%rake rails:upgrade:backup
(in /home/mutoh/dev/git/gettext_rails/sample_rails3)
 
* backing up app/controllers/application_controller.rb to app/controllers/application_controller.rb.rails2
* backing up app/helpers/application_helper.rb to app/helpers/application_helper.rb.rails2
* backing up config/routes.rb to config/routes.rb.rails2
* backing up config/environment.rb to config/environment.rb.rails2
* backing up config/database.yml to config/database.yml.rails2
* backing up doc/README_FOR_APP to doc/README_FOR_APP.rails2
* backing up test/test_helper.rb to test/test_helper.rb.rails2
 
This is a list of the files analyzed and backed up (if they existed);
you will probably not want the generator to replace them since
you probably modified them (but now they're safe if you accidentally do!).
 
- .gitignore
- app/controllers/application_controller.rb
- app/helpers/application_helper.rb
- config/routes.rb
- config/environment.rb
- config/environments/*
- config/database.yml
- doc/README_FOR_APP
- test/test_helper.rb

.rails2という拡張子をつけてバックアップが取られるのね。

■ [Rails] 3.0 betaを試してみる(5) rake rails:upgrade:gems

check時に「Old gem bundling (config.gems)」と出力されたのをバージョンアップしてくれる。

3.0では、config.gemを使用せずに、Bundlerというライブラリを使用してGemfileに使用するgemを追加する形に変更されたのでそれの対応。でも、Gemfileって、config/配下じゃなくて、RAILS_ROOT直下に置くのね…。

% rake rails:upgrade:gems > Gemfile
% cat Gemfile
# Edit this Gemfile to bundle your application's dependencies.
# This preamble is the current preamble for Rails 3 apps; edit as needed.
path "/path/to/rails", :glob => "{*/,}*.gemspec"
git "git://github.com/rails/rack.git"
 
gem "rails", "3.0.pre"
 
gem 'locale_rails'
gem 'gettext_activerecord'
gem 'gettext_rails'

config/environment.rbにあるconfig.gemの行は削除しておく。

■ [Rails] 3.0 betaを試してみる(6) rake rails:upgrade:routes

次に、check時に「Old router API」と出力されたのをバージョンアップ。

% rake rails:upgrade:routes > new_routes.rb
% mv new_routes.rb config/routes.rb
% cat config/routes.rb
(in /home/mutoh/dev/git/gettext_rails/sample_rails3) #この行は不要なので削除する。
SampleRails3::Application.routes.draw do
  resources :articles
  match '/:controller(/:action(/:id))'
end

だいぶ変わったなー。SampleRails3というのが本アプリのクラス名になる、ということかな。

■ [Rails] 3.0 betaを試してみる(7) rake rails:upgrade:configuration

最後にconfig/applicationを生成する。

% rake rails:upgrade:configuration > config/application.rb
% cat config/application.rb 
(in /home/mutoh/dev/git/gettext_rails/sample_rails3) #不要なので削除する。
# Put this in config/application.rb
require File.expand_path('../boot', __FILE__)
 
module SampleRails3
  class Application < Rails::Application
     :
     :
  end
end

中身は旧config/environment.rbをコピーした感じ。
config/environment.rbは以下のように書き換える。こちらは自動じゃないのか。

# Load the rails application
require File.expand_path('../application', __FILE__)
 
# Initialize the rails application
#YourApp::Application.initialize!
SampleRails3::Application.initialize!  #自分のアプリ用に書き換える。

■ [Rails] 3.0 betaを試してみる(8) rails 3.0 betaで実行

さて、準備はできたので、さっそく起動してみよう。

% rvm 1.8.7%rails3beta
% ruby script/server
/home/mutoh/.rvm/rubies/ruby-1.8.7-p249/lib/ruby/site_ruby/1.8/rubygems.rb:230:in `activate': can't activate rails (= 2.3.2, runtime) for [], already activated rails-3.0.0.beta for [] (Gem::LoadError)
	from /home/mutoh/.rvm/rubies/ruby-1.8.7-p249/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:35:in `require'
	from ./script/../config/boot.rb:54:in `load_initializer'
	from ./script/../config/boot.rb:38:in `run'
	from ./script/../config/boot.rb:11:in `boot!'
	from ./script/../config/boot.rb:109
	from script/server:2:in `require'
	from script/server:2

がーん。ちと出直します…。