● Ruby, Railsをインストール
以前の記事の手順通りに再度インストールから始め、サーバーの起動を確認するところまで出来た
rvmのインストールで、'rvm notes'を実行すると以下のような表示が。そして気になるのが下線の部分
$ rvm notes
Notes for Linux ( DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.2 LTS" )
NOTE: 'ruby' represents Matz's Ruby Interpreter (MRI) (1.8.X, 1.9.X)
This is the *original* / standard Ruby Language Interpreter
'ree' represents Ruby Enterprise Edition
'rbx' represents Rubinius
bash >= 3.2 is required
curl is required
git is required (>= 1.7 recommended)
patch is required (for ree and some ruby-head's).
If you wish to install rbx and/or Ruby 1.9 head (MRI) (eg. 1.9.2-head),
then you must install and use rvm 1.8.7 first.
If you wish to have the 'pretty colors' again,
set 'export rvm_pretty_print_flag=1' in ~/.rvmrc.
dependencies:
# For RVM
rvm: bash curl git
# For Ruby (MRI, Rubinius, & REE) you should install the following OS dependencies:
ruby: /usr/bin/apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake
# For JRuby (if you wish to use it) you will need:
jruby: /usr/bin/apt-get install curl g++ openjdk-6-jre-headless
jruby-head: /usr/bin/apt-get install ant openjdk-6-jdk
# In addition to ruby: dependencies,
ruby-head: subversion
# For IronRuby (if you wish to use it) you will need:
ironruby: /usr/bin/apt-get install curl mono-2.0-devel
For rbx (Rubinius) more than 600MB of free RAM required.
NOTE: For all installations, as of 1.7, RVM no longer autoloads .rvmrc files. In order to return this functionality, you MUST add 'export rvm_project_rvmrc=1' to your $HOME/.rvmrc file.
This causes RVM to override 'cd' which, while toggleable even < 1.7, is currently defaulted to 'off'. This knob returns the previous behaviour to active which causes per-project .rvmrc files to be loaded once again.
Example: echo 'export rvm_project_rvmrc=1' >> $HOME/.rvmrc && rvm reload
● 各バージョンを確認してみる
$ ruby -v
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]
$ rails -v
Rails 3.0.10
$ gem -v
1.3.7
$ sqlite3 -version
3.6.22
$ rvm -v
rvm 1.7.2
● Railsアプリケーション作成開始
$ rails new /home/hito/photos
● Scaffold （データベース内のデータの登録、読込み、更新、削除のためのコードを生成する）
$ cd photos
$ rails g scaffold photo key:integer alb_tt:text place:text content:text year1:integer year2:string month:integer day:integer filename:text image:text cd_no:string dvd_no:string region:string remark:text people:text
invoke active_record
create db/migrate/20110821111257_create_photos.rb
create app/models/photo.rb
invoke test_unit
create test/unit/photo_test.rb
create test/fixtures/photos.yml
route resources :photos
invoke scaffold_controller
create app/controllers/photos_controller.rb
invoke erb
create app/views/photos
create app/views/photos/index.html.erb
create app/views/photos/edit.html.erb
create app/views/photos/show.html.erb
create app/views/photos/new.html.erb
create app/views/photos/_form.html.erb
invoke test_unit
create test/functional/photos_controller_test.rb
invoke helper
create app/helpers/photos_helper.rb
invoke test_unit
create test/unit/helpers/photos_helper_test.rb
invoke stylesheets
create public/stylesheets/scaffold.css
● ブラウザでアクセスしてみる
127.0.0.1:3000/photos
● Migrate ~DBテーブルの作成
Rails2と同様、$HOME/User/photos/db/migrate に'201108xxxxxxxx_create_photos.rb'といった、DBのフィールドを作成用する要素が生成されている。ファイルの中身が以下
class CreatePhotos < ActiveRecord::Migration
def self.up
create_table :photos do |t|
t.integer :key
t.text :alb_tt
t.text :place
t.text :content
t.integer :year1
t.string :year2
t.integer :month
t.integer :day
t.text :filename
t.text :image
t.string :cd_no
t.string :dvd_no
t.string :region
t.text :remark
t.text :people
t.timestamps
end
end
Rakeにてデータベースを作成する。以下のコマンドによって、SQLではCREATE TABLEが実行される
$ rake db:migrate
== CreatePhotos: migrating ===================================================
-- create_table(:photos)
-> 0.0224s
== CreatePhotos: migrated (0.0233s) ==========================================
● アプリケーション・ユニットの各種テスト
$ rake
Loaded suite /home/hito/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_test_loader
Started
.
Finished in 0.184379 seconds.
1 tests, 1 assertions, 0 failures, 0 errors, 0 skips
Test run options: --seed 33681
Loaded suite /home/hito/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_test_loader
Started
.......
Finished in 0.755171 seconds.
7 tests, 10 assertions, 0 failures, 0 errors, 0 skips
Test run options: --seed 56047
● ブラウザに表示する ~コンソールの表示とブラウザの表示
$ rails s
=> Booting WEBrick
=> Rails 3.0.10 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2011-08-21 20:56:15] INFO WEBrick 1.3.1
[2011-08-21 20:56:15] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux]
[2011-08-21 20:56:15] INFO WEBrick::HTTPServer#start: pid=1734 port=3000
DEPRECATION WARNING: config.action_view.debug_rjs will be removed in 3.1, from 3.1 onwards you will need to install prototype-rails to continue to use RJS templates . (called from service at /home/hito/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/webrick/httpserver.rb:111)
Started GET "/photos" for 127.0.0.1 at 2011-08-21 20:56:19 +0900
Processing by PhotosController#index as HTML
Photo Load (3.7ms) SELECT "photos".* FROM "photos"
Rendered photos/index.html.erb within layouts/application (11.6ms)
Completed 200 OK in 149ms (Views: 17.8ms | ActiveRecord: 3.7ms)
この状態で、レコードの新規作成、編集、一覧表示、削除が出来ることを確認 -> Ok
つづく
*参照： WEB+DB Press誌 Vol.58 'Rails3'、O'Reilly 'Head First Rails'
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