コレグレーデギネード

WindowsとかUbuntuとかRubyとかRailsとか

Ruby1.9.3 + Rails3.2.3 プロジェクト作成からWEBrickの起動まで。

ruby rails Ubuntu 12.04 LTS

前回の「RVMでRubyとGem環境を切り替え。Railsのインストールまで。」の続き。
環境をおさらい。

$ rvm -v
rvm 1.13.4 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]

$ ruby -v
ruby 1.9.3p203 (2012-05-04 revision 35536) [i686-linux]

$ gem -v
1.8.24

$ rails -v
Rails 3.2.3

サンプルプロジェクトを作ります。

$ rails new sampleapp
      create  
      create  README.rdoc
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/assets/images/rails.png
      create  app/assets/javascripts/application.js
      create  app/assets/stylesheets/application.css
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/mailers
      create  app/models
      create  app/views/layouts/application.html.erb
      create  app/mailers/.gitkeep
      create  app/models/.gitkeep
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/secret_token.rb
      create  config/initializers/session_store.rb
      create  config/initializers/wrap_parameters.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  doc
      create  doc/README_FOR_APP
      create  lib
      create  lib/tasks
      create  lib/tasks/.gitkeep
      create  lib/assets
      create  lib/assets/.gitkeep
      create  log
      create  log/.gitkeep
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/favicon.ico
      create  public/index.html
      create  public/robots.txt
      create  script
      create  script/rails
      create  test/fixtures
      create  test/fixtures/.gitkeep
      create  test/functional
      create  test/functional/.gitkeep
      create  test/integration
      create  test/integration/.gitkeep
      create  test/unit
      create  test/unit/.gitkeep
      create  test/performance/browsing_test.rb
      create  test/test_helper.rb
      create  tmp/cache
      create  tmp/cache/assets
      create  vendor/assets/javascripts
      create  vendor/assets/javascripts/.gitkeep
      create  vendor/assets/stylesheets
      create  vendor/assets/stylesheets/.gitkeep
      create  vendor/plugins
      create  vendor/plugins/.gitkeep
         run  bundle install
Fetching gem metadata from https://rubygems.org/.........
Using rake (0.9.2.2) 
Using i18n (0.6.0) 
Using multi_json (1.3.4) 
Using activesupport (3.2.3) 
Using builder (3.0.0) 
Using activemodel (3.2.3) 
Using erubis (2.7.0) 
Using journey (1.0.3) 
Using rack (1.4.1) 
Using rack-cache (1.2) 
Using rack-test (0.6.1) 
Using hike (1.2.1) 
Using tilt (1.3.3) 
Using sprockets (2.1.3) 
Using actionpack (3.2.3) 
Using mime-types (1.18) 
Using polyglot (0.3.3) 
Using treetop (1.4.10) 
Using mail (2.4.4) 
Using actionmailer (3.2.3) 
Using arel (3.0.2) 
Using tzinfo (0.3.33) 
Using activerecord (3.2.3) 
Using activeresource (3.2.3) 
Using bundler (1.1.3) 
Installing coffee-script-source (1.3.1) 
Installing execjs (1.3.1) 
Installing coffee-script (2.2.0) 
Using rack-ssl (1.3.2) 
Using json (1.7.0) 
Using rdoc (3.12) 
Using thor (0.14.6) 
Using railties (3.2.3) 
Installing coffee-rails (3.2.2) 
Installing jquery-rails (2.0.2) 
Using rails (3.2.3) 
Installing sass (3.1.17) 
Installing sass-rails (3.2.5) 
Installing sqlite3 (1.3.6) with native extensions 
Installing uglifier (1.2.4) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

でぎだぞ。
rails serverを立ち上げてみる。

$ cd sampleapp
$ rails s
/home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/execjs-1.3.1/lib/execjs/runtimes.rb:50:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/execjs-1.3.1/lib/execjs.rb:5:in `<module:ExecJS>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/execjs-1.3.1/lib/execjs.rb:4:in `<top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `each'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `block in require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/bundler-1.1.3/lib/bundler.rb:119:in `require'
	from /home/username/sampleapp/config/application.rb:7:in `<top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/railties-3.2.3/lib/rails/commands.rb:53:in `require'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/railties-3.2.3/lib/rails/commands.rb:53:in `block in <top (required)>'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/railties-3.2.3/lib/rails/commands.rb:50:in `tap'
	from /home/username/.rvm/gems/ruby-1.9.3-head@rails3/gems/railties-3.2.3/lib/rails/commands.rb:50:in `<top (required)>'
	from script/rails:6:in `require'
	from script/rails:6:in `<main>'

ガッツリどやされるが、落ち着いていこうじゃないか。
プロジェクト内のGemfileに以下の２行を追加。

gem 'execjs'
gem 'therubyracer'

んで、bundle installする。

$ bundle install
Fetching gem metadata from https://rubygems.org/.........
Using rake (0.9.2.2) 
Installing i18n (0.6.0) 
Installing multi_json (1.3.4) 
Installing activesupport (3.2.3) 
Installing builder (3.0.0) 
Installing activemodel (3.2.3) 
Installing erubis (2.7.0) 
Installing journey (1.0.3) 
Installing rack (1.4.1) 
Installing rack-cache (1.2) 
Installing rack-test (0.6.1) 
Installing hike (1.2.1) 
Installing tilt (1.3.3) 
Installing sprockets (2.1.3) 
Installing actionpack (3.2.3) 
Installing mime-types (1.18) 
Installing polyglot (0.3.3) 
Installing treetop (1.4.10) 
Installing mail (2.4.4) 
Installing actionmailer (3.2.3) 
Installing arel (3.0.2) 
Installing tzinfo (0.3.33) 
Installing activerecord (3.2.3) 
Installing activeresource (3.2.3) 
Using bundler (1.1.3) 
Installing coffee-script-source (1.3.1) 
Installing execjs (1.3.2) 
Installing coffee-script (2.2.0) 
Installing rack-ssl (1.3.2) 
Installing json (1.7.1) with native extensions 
Installing rdoc (3.12) 
Installing thor (0.14.6) 
Installing railties (3.2.3) 
Installing coffee-rails (3.2.2) 
Installing jquery-rails (2.0.2) 
Installing libv8 (3.3.10.4) 
Installing rails (3.2.3) 
Installing sass (3.1.17) 
Installing sass-rails (3.2.5) 
Installing sqlite3 (1.3.6) with native extensions 
Installing therubyracer (0.10.1) with native extensions 
Installing uglifier (1.2.4) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
Post-install message from rdoc:
Depending on your version of ruby, you may need to install ruby rdoc/ri data:

<= 1.8.6 : unsupported
 = 1.8.7 : gem install rdoc-data; rdoc-data --install
 = 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!

もう一度、立ち上がーれーと唱える。

$ rails s
=> Booting WEBrick
=> Rails 3.2.3 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2012-05-08 11:42:21] INFO  WEBrick 1.3.1
[2012-05-08 11:42:21] INFO  ruby 1.9.3 (2012-05-07) [i686-linux]
[2012-05-08 11:42:21] INFO  WEBrick::HTTPServer#start: pid=6360 port=3000

無事に立ち上がったようです。
http://localhost:3000でプロジェクトのトップページが確認できればOK。

「Could not find a JavaScript runtime」の対応については、以下のパッケージをインストールすることでも対応可。
この場合Gemfileには手を加えなくてOK。

$ sudo apt-get install nodejs