Design Recipe 別館 Blog

class Greeting
  def initialize(out = STDOUT)
    @out = out
  end

  def hello
    @out.puts 'hello!'
  end
end

class Greeting
  ...
  before_filter :before_greeting
  after_filter :after_greeting

  ...

  private
  def before_greeting
    @out.puts 'Ya!'
  end

  def after_greeting
    @out.puts 'bye!'
  end
end

Greeting.new.hello
# >> Ya!      # 「hello!」の前に表示される
# >> hello!
# >> bye!     # 「hello!」の後に表示される

require 'test/unit'

class GreetingTest < Test::Unit::TestCase
  def setup
    @out = StringIO.new
    @greeting = Greeting.new(@out)
  end

  def test_running_filters
    @greeting.hello
    assert_equal ['Ya!', 'hello!', 'bye!'], @out.string.split("\n")
  end
end

require 'rubygems'
require 'active_support'

module Filters
  def self.included(base)
    base.class_eval do
      include ActiveSupport::Callbacks

      define_callbacks :before_filter, :after_filter
    end
  end
end

class Greeting
  include Filters

  before_filter :before_greeting
  after_filter :after_greeting

  def hello_with_filters
    run_callbacks(:before_filter)
    hello_without_filters
    run_callbacks(:after_filter)
  end

  alias_method :hello_without_filters, :hello
  alias_method :hello, :hello_with_filters

  private
  def before_greeting
    @out.puts 'Ya!'
  end

  def after_greeting
    @out.puts 'bye!'
  end
end

# 既存のクラス
class Greeting
  def initialize(out = STDOUT)
    @out = out
  end
  
  def hello
    @out.puts 'hello!'
  end
end

require 'rubygems'
require 'active_support'

module Filters
  def self.included(base)
    base.class_eval do
      include ActiveSupport::Callbacks

      define_callbacks :before_filter, :after_filter
    end
  end
end

# Greetin クラスを再定義
class Greeting
  include Filters

  before_filter :before_greeting
  after_filter :after_greeting

  def hello_with_filters
    run_callbacks(:before_filter)
    hello_without_filters
    run_callbacks(:after_filter)
  end

  # ActiveSupport::CoreExtensions::Module#alias_method_chain を使えば1行で書ける
  alias_method :hello_without_filters, :hello
  alias_method :hello, :hello_with_filters

  private
  def before_greeting
    @out.puts 'Ya!'
  end

  def after_greeting
    @out.puts 'bye!'
  end
end

# テスト
require 'test/unit'

class GreetingTest < Test::Unit::TestCase
  def setup
    @out = StringIO.new
    @greeting = Greeting.new(@out)
  end

  def test_running_filters
    @greeting.hello
    assert_equal ['Ya!', 'hello!', 'bye!'], @out.string.split("\n")
  end
end

$ ruby filter_example1.rb
Loaded suite filter_example1
Started
.
Finished in 0.000389 seconds.

1 tests, 1 assertions, 0 failures, 0 errors

$ pwd
/Users/taka
$ pushd ~/Documents/
~/Documents ~
$ pwd
/Users/taka/Documents
$ pushd ~/Desktop/
~/Desktop ~/Documents ~
$ pwd
/Users/taka/Desktop
$ pushd ../work/radiant/tmp/
~/work/radiant/tmp ~/Desktop ~/Documents ~
$ pwd
/Users/taka/work/radiant/tmp

$ dirs -v
 0  ~/work/radiant/tmp
 1  ~/Desktop
 2  ~/Documents
 3  ~

$ pushd +2
~/Documents ~ ~/work/radiant/tmp ~/Desktop
$ pwd
/Users/taka/Documents

$ popd +1
~/work/radiant/tmp ~/Documents ~
$ dirs -v
 0  ~/work/radiant/tmp
 1  ~/Documents
 2  ~

$ cd ~/Documents/
$ cd ~/work/
$ cd -
/Users/taka/Documents
$ pwd
/Users/taka/Documents

$ cp a.txt b.txt
$ vi b.txt

$ cp a.txt b.txt
$ vi !:2

$ echo {one,two,three}sheep
onesheep twosheep threesheep

$ sudo cp -p /etc/apache2/httpd.conf{,.back}

$ sudo cp -p /etc/apache2/httpd.conf /etc/apache2/httpd.conf.back

$ diff -u /etc/apache2/httpd.conf{,.back}

$ export HISTCONTROL=ignoreboth

$ export HISTTIMEFORMAT='%Y-%m-%d %T '
$ history
...
  496  2009-12-19 21:56:37 history
  497  2009-12-19 21:56:40 cp -p a.txt c.txt
  498  2009-12-19 21:56:45 cp -p a.txt d.txt
  499  2009-12-19 21:56:49 history
  500  2009-12-19 21:58:50 exit
  501  2009-12-19 21:58:57 history

$ irb --prompt simple
>> $KCODE
=> "NONE"
>> $KCODE = 'u'
=> "u"
>> str_ja = '日本語'
=> "日本語"
>> str_ja.to_yaml
=> "--- !binary |\n5pel5pys6Kqe\n\n"

$ gem install gemcutter
$ gem tumble
$ gem sources
*** CURRENT SOURCES ***

http://gemcutter.org
http://gems.rubyforge.org/
http://gems.github.com

$ gem install yaml_waml
Successfully installed yaml_waml-0.3.0
1 gem installed
Installing ri documentation for yaml_waml-0.3.0...
Installing RDoc documentation for yaml_waml-0.3.0...

>> require 'yaml_waml'
=> true
>> str_ja.to_yaml
=> "--- "日本語"\n"

Radiant::Initializer.run do |config|
...
  config.gem 'yaml_waml', :version => '~> 0.3', :source => 'http://gemcutter.org'
...
end

M-x server-start

(server-start)

$ cd ~/bin
$ ln -s /Applications/Emacs.app/Contents/MacOS/bin/emacsclient emacsclient

$ sudo gem install httparty
$ gem list httparty

*** LOCAL GEMS ***

httparty (0.4.3)

require 'time'
require 'forwardable'

require 'rubygems'
require 'httparty'

class SimpleTwitter
  extend Forwardable
  include HTTParty
  base_uri 'https://twitter.com' # SSL で

  def_delegator :"#{self}", :get, :get

  def initialize(user, password, options = {})
    if options.key? :http_proxy
      options[:http_proxy_port] ||= 8080
      self.class.http_proxy options[:http_proxy], options[:http_proxy_port].to_i
    end
    @auth_info = { :username => user, :password => password }
  end

  def timeline(which = :friends, options = {})
    auth_info_merge! options
    get("/statuses/#{which}_timeline.json", options)
  end

  def mentions(options = {})
    auth_info_merge! options
    get("/statuses/mentions.json", options)
  end

  def followers(options = {})
    auth_info_merge! options
    options[:query] ||= {}
    options[:query].merge!({ :cursor => -1 }) unless options[:query].key? :cursor
    get("/statuses/followers.json", options)
  end

  class << self
    # 日付表示のフォーマット
    def format_time(time, format = '%Y/%m/%d %H:%M:%S')
      (time.is_a?(String) ? Time.parse(time) : time).strftime(format)
    end
  end

  private
  def auth_info_merge!(options)
    options.merge!({ :basic_auth => @auth_info })
  end
end

require 'simple_twitter'

# 'user', 'password' には Twitter のログインアカウントとパスワードを指定
twitter = SimpleTwitter.new('user', 'password')
# Proxy を経由する必要がある場合
# twitter = SimpleTwitter.new('user', 'password',
#   { :http_proxy => 'proxy_server', :http_proxy_port => 8080 })

# query count のデフォルトは 20
twitter.timeline(:friends, { :query => { :count => 5 } }).each do |twit|
  puts "#{twit['user']['screen_name']} [#{SimpleTwitter.format_time(twit['created_at'])}](#{twit['id'].to_s}):\n" +
       "  #{twit['text']}"
end

# >> delicious50 [2009/11/07 15:47:58](5501187604):
# >>   地球人ネットワークを創るアルク:スペースアルク http://bit.ly/lcfEp japan
# >> delicious50 [2009/11/07 15:47:56](5501187311):
# >>   findability.org - by Peter Morville http://bit.ly/15KKUP findability ia
# >> GuyKawasaki [2009/11/07 15:46:52](5501173816):
# >>   Guess who is a Glamour woman of the year? http://om.ly/bTqX
# >> tek_news [2009/11/07 15:46:49](5501173203):
# >>   HNews: Someone actually created a pyramid scheme for Twitter popularity. http://bit.ly/20gVa5
# >> GuyKawasaki [2009/11/07 15:46:46](5501172663):
# >>   The official rules of Shotgun http://om.ly/bTqU

require 'simple_twitter'

FOLLOWERS_CSV = 'followers.csv'
INDENT = ' ' * 2

def get_follower_user_list(twitter, cursor = -1)
  users = []
  twit_followers = twitter.followers(:query => { :cursor => cursor })

  twit_followers['users'].each do |follower|
    users << follower['screen_name']
  end

  next_cursor = (twit_followers['next_cursor'] ||= '0')
  unless next_cursor.to_i == 0
    users.concat(get_follower_user_list(twitter, next_cursor))
  end
  users
end

# 'user', 'password' には Twitter のログインアカウントとパスワードを指定
twitter = SimpleTwitter.new('user', 'password')
# Proxy を経由する必要がある場合
# twitter = SimpleTwitter.new('user', 'password',
#   { :http_proxy => 'proxy_server', :http_proxy_port => 8008 })

current_users = get_follower_user_list(twitter)

previous_users = []
if File.exist? FOLLOWERS_CSV
  begin
    previous_users = File.open(FOLLOWERS_CSV).read.split(',')
  rescue
    puts $!
    exit(9)
  end
end

unfollowers = previous_users - current_users
new_follow_users = current_users - previous_users

puts "Follow User Stats at #{SimpleTwitter.format_time(Time.now)}"
puts '=' * 50
puts "Current Follow Users count: %s" % current_users.size.to_s
puts "Unfollowers count: %s" % unfollowers.size.to_s

unfollowers.each do |user|
  puts "#{INDENT}#{user}\t#{SimpleTwitter.base_uri}/#{user}"
end

puts "New follow Users count: %s" % new_follow_users.size.to_s

new_follow_users.each do |user|
  puts "#{INDENT}#{user}\t#{SimpleTwitter.base_uri}/#{user}"
end

File.open(FOLLOWERS_CSV, 'w') { |f| f.write current_users * ',' }

# >> Follow User Stats at 2009/11/07 15:03:01
# >> ==================================================
# >> Current Follow Users count: 65
# >> Unfollowers count: 7
# >>   SavvyExplorer     https://twitter.com/SavvyExplorer
# >>   talyaalove        https://twitter.com/talyaalove
# >>   59minlearning     https://twitter.com/59minlearning
# >>   lifefulfillment   https://twitter.com/lifefulfillment
# >>   follow4profit     https://twitter.com/follow4profit
# >>   Forex_Blog        https://twitter.com/Forex_Blog
# >>   VirtualTotte      https://twitter.com/VirtualTotte
# >> New follow Users count: 6
# >>   RecognitionApps   https://twitter.com/RecognitionApps
# >>   kazuyo_k          https://twitter.com/kazuyo_k
# >>   Dewina_Olivera    https://twitter.com/Dewina_Olivera
# >>   HP_AppSecurity    https://twitter.com/HP_AppSecurity
# >>   videotodaynews    https://twitter.com/videotodaynews
# >>   devtube           https://twitter.com/devtube

$ ruby ./follows_unfollowers_check.rb

$ cd /path/to/repository
$ git remote add unfuddle git@<subdomain>.unfuddle.com:<subdomain>/<abbreviation>.git
$ git config remote.unfuddle.push refs/heads/master:refs/heads/master

$ git config --list
...
remote.unfuddle.url=git@<subdomain>.unfuddle.com:<subdomain>/<abbreviation>.git
remote.unfuddle.fetch=+refs/heads/*:refs/remotes/unfuddle/*
remote.unfuddle.push=refs/heads/master:refs/heads/master

$ git push unfuddle master
The authenticity of host '<subdomain>.unfuddle.com (xxx.xxx.xxx.xxx)' can't be established.
RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '<subdomain>.unfuddle.com,xxx.xxx.xxx.xxx' (RSA) to the list of known hosts.
Counting objects: 307, done.
Compressing objects: 100% (282/282), done.
Writing objects: 100% (307/307), 214.83 KiB, done.
Total 307 (delta 111), reused 0 (delta 0)
To git@<subdomain>.unfuddle.com:<subdomain>/<abbreviation>.git
 * [new branch]  master -> master

$ git clone git@<subdomain>.unfuddle.com:<subdomein>/<abbreviation>.git

(defun search-gem-path (name)
  (shell-command-to-string
    (format "gem which %s | ruby -n -e 'if /lib/; print $_[0, $_.rindex(%%[lib])]; end'" name)))
(defun find-ruby-gem (name)
  (interactive "sRuby gem libraray name: ")
  (find-file (search-gem-path name)))

$ irb --prompt simple
>> require 'devel/which'
=> true
>> which_library 'net/http'
=> "/opt/local/lib/ruby/1.8/net/http.rb"

require 'rubygems'
require 'sqlite3'

# SQLite バージョン
# AR の CoC はとりあえず無視
class PoorManWithSqlite
  # クラスインスタンス変数に生成されたクラスのリストを保持する
  class << self; attr_reader :generated_classes; end
  @generated_classes = []

  def initialize(attributes = nil)
    if attributes
      attributes.each_pair do |key, value|
        instance_variable_set('@' + key, value)
      end
    end
  end

  def self.connect(database = 'data.db')
    @@db = SQLite3::Database.new(database)
    sql = <<-SQL
      select tbl_name
        from sqlite_master
       where type = 'table'
         and tbl_name != 'sqlite_sequence'
       order by tbl_name;
SQL
    
    @@db.execute(sql).flatten.each do |table_name|
      class_name = table_name.split('_').map { |word| word.capitalize }.join

      # Module#const_set を使用してテーブル用の新しいクラスを作成する
      @generated_classes << klass = Object.const_set(class_name,
                                                     Class.new(PoorManWithSqlite))

      klass.module_eval do
        @@fields = []
        @@table_name = table_name
        def fields; @@fields; end
      end

      # テーブルのフィールドのリストを収集し、
      # それらに対する getter/setter を用意する。
      @@db.table_info(table_name) do |field|
        # getter/setter の追加
        klass.send :attr_accessor, field['name'].to_sym
        # field セットに追加
        klass.module_eval { @@fields << field['name'] }
      end
    end
    @@db
  end

  def self.close
    @@db.close
  end

  # id でレコードを取得する
  def self.find(id)
    # SQLite3::Database#execute2 は、最初の行としてカラム名称の配列を返す。
    result = @@db.execute2("select * from #{@@table_name} where id = #{id} limit 1")
    attributes = Hash[*result.transpose.flatten]
    new(attributes) if attributes
  end

  # 全てのレコードを取得する
  def self.all
    results = @@db.execute2("select * from #{@@table_name}")
    fields = results.shift
    records = []
    results.each do |result|
      records << new(Hash[*fields.zip(result).flatten])
    end
    results
  end
end

PoorManWithSqlite.connect
table_classes = PoorManWithSqlite.generated_classes # => [Departments, Employees]
table_classes[0].superclass               # => PoorManWithSqlite
employee = Employees.find(1)              # => #<Employees:0x11f20d8
                                                 @department_id=nil,
                                                 @name="taka",
                                                 @id="1">
employee.name                             # => "taka"
employees = Employees.all                 # => [["1", "taka", nil],
                                                ["2", "goro", nil]]
PoorManWithSqlite.close                             # => true

create table departments (
  id integer PRIMARY KEY AUTOINCREMENT NOT NULL,
  name varchar(255)
);
create table employees (
  id integer PRIMARY KEY AUTOINCREMENT NOT NULL,
  name varchar(255),
  department_id integer
);

$ sqlite3 data.db < creat-table.sql

# Module#const_set を使用してテーブル用の新しいクラスを作成する
@generated_classes << klass = Object.const_set(class_name,
                                               Class.new(PoorManWithSqlite))

C = Object.const_set('Con', 10)
Con                             # => 10
C                               # => 10

class SuperAClass; end
sub_k = Class.new(SuperAClass)  # => #<Class:0x2533c>

sub_k.class                     # => Class
sub_k.superclass                # => SuperAClass

k = Class.new(SuperAClass) do |klass|
  def hoge
    'hoge hoge'
  end
end

o = k.new                       # => #<#<Class:0x273e4>:0x273a8>
o.hoge                          # => "hoge hoge"

 # テーブルのフィールドのリストを収集し、それらに対する getter/setter を用意する。
 @@db.table_info(table_name) do |field|
   # getter/setter の追加
   klass.send :attr_accessor, field['name'].to_sym
   # field セットに追加
   klass.module_eval { @@fields << field['name'] }
 end

def initialize(attributes = nil)
  if attributes
    attributes.each_pair do |key, value|
      instance_variable_set('@' + key, value)
    end
  end
end

results.each do |result|
  records << new(Hash[*fields.zip(result).flatten])
end

# クラスインスタンス変数に生成されたクラスのリストを保持する
class << self; attr_reader :generated_classes; end
@generated_classes = []

 # テーブルのフィールドのリストを収集し、それらに対する getter/setter を用意する。
 @@db.table_info(table_name) do |field|
   # getter/setter の追加
   klass.send :attr_accessor, field['name'].to_sym
   # field セットに追加
   klass.module_eval { @@fields << field['name'] }
 end

# getter/setter の追加とfield セットの追加
klass.module_eval { attr_accessor field['name'].to_sym; @@fields << field['name'] }

$ sudo gem install rest-client
Password:
Successfully installed rest-client-1.0.3
1 gem installed
Installing ri documentation for rest-client-1.0.3...
Installing RDoc documentation for rest-client-1.0.3...

$ rails -d sqlite3 rest-test
$ cd rest-test

$ script/generate scaffold Article title:string content:text published_at:datetime
      exists  app/models/
      exists  app/controllers/
      exists  app/helpers/
      create  app/views/articles
      exists  app/views/layouts/
      exists  test/functional/
      exists  test/unit/
      create  test/unit/helpers/
      exists  public/stylesheets/
      create  app/views/articles/index.html.erb
      create  app/views/articles/show.html.erb
      create  app/views/articles/new.html.erb
      create  app/views/articles/edit.html.erb
      create  app/views/layouts/articles.html.erb
      create  public/stylesheets/scaffold.css
      create  app/controllers/articles_controller.rb
      create  test/functional/articles_controller_test.rb
      create  app/helpers/articles_helper.rb
      create  test/unit/helpers/articles_helper_test.rb
       route  map.resources :articles
  dependency  model
      exists    app/models/
      exists    test/unit/
      exists    test/fixtures/
      create    app/models/article.rb
      create    test/unit/article_test.rb
      create    test/fixtures/articles.yml
      create    db/migrate
      create    db/migrate/20090906091207_create_articles.rb

$ rake db:migrate
(in /Users/taka/work/rest-test)
==  CreateArticles: migrating =================================================
-- create_table(:articles)
   -> 0.0032s
==  CreateArticles: migrated (0.0035s) ========================================

$ script/server 
=> Booting Mongrel
=> Rails 2.3.2 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server

$ irb
>> require 'rubygems'
=> true
>> require 'rest_client'
=> true
>> RestClient.get 'http://localhost:3000/articles'
=> "<?xml version="1.0" encoding="UTF-8"?>\n
      <articles type="array">\n
        <article>\n
          <content>This is the first article!!</content>\n
          <created-at type="datetime">2009-09-06T09:13:46+09:00</created-at>\n
          <id type="integer">1</id>\n
          <published-at type="datetime">2009-09-06T09:13:00+09:00</published-at>\n
          <title>First Article</title>\n
          <updated-at type="datetime">2009-09-06T09:13:46+09:00</updated-at>\n
        </article>\n
        <article>\n
          <content>This is the second article!\r\n</content>\n
          <created-at type="datetime">2009-09-06T18:17:35+09:00</created-at>\n
          <id type="integer">2</id>\n
          <published-at type="datetime">2009-09-06T18:17:00+09:00</published-at>\n
          <title>Second Article</title>\n
          <updated-at type="datetime">2009-09-06T18:17:35+09:00</updated-at>\n
        </article>\n
      </articles>\n"

>> require 'rexml/document'
=> true
>> doc_root = REXML::Document.new(RestClient.get('http://localhost:3000/articles')).root
=> articles typearray .... 
>> doc_root.elements.each('//article') do |article|
?>   puts [
?>     article.elements['id'].text,
?>     article.elements['title'].text,
?>     article.elements['content'].text
>>   ].join(':')
>> end
1:First Article:This is the first article!!
2:Second Article:This is the second article!
=> [article .... , article .... ]

>> require 'ostruct' # OpenStruct を使用するため
=> true
>> require 'time' # Time.parse を使用するため
=> true
>> def get_article_list
>>   doc_root = REXML::Document.new(RestClient.get('http://localhost:3000/articles')).root
>>   articles = []
>>   doc_root.elements.each('//article') do |article|
?>     art = OpenStruct.new
>>     art.resource_id = article.elements['id'].text.to_i
>>     art.title = article.elements['title'].text
>>     art.content = article.elements['content'].text
>>     art.published_at = Time.parse article.elements['published-at'].text
>>     articles << art
>>   end
>>   articles
>> end

>> get_article_list
=> [#<OpenStruct published_at=Sun Sep 06 09:13:00 +0900 2009, resource_id=1, content="This is the first article!!", title="First Article">,
    #<OpenStruct published_at=Sun Sep 06 18:17:00 +0900 2009, resource_id=2, content="This is the second article!\n", title="Second Article">]

>> article2 = get_article_list[1]
=> #<OpenStruct published_at=Sun Sep 06 18:17:00 +0900 2009, resource_id=2, content="This is the second article!\n", title="Second Article">
>> RestClient.put(
?>   "http://localhost:3000/articles/#{article2.resource_id.to_s}",
?>   :article => { :content => "#{article2.content} Changed" })
RestClient::RequestFailed: HTTP status code 422

Processing ArticlesController#update (for 127.0.0.1 at 2009-09-07 00:13:06) [PUT]
  Parameters: {"article"=>{"content"=>" Changed"}, "id"=>"2"}

ActionController::InvalidAuthenticityToken (ActionController::InvalidAuthenticityToken):

class ArticlesController < ApplicationController
  skip_before_filter :verify_authenticity_token

>> RestClient.put(
?>   "http://localhost:3000/articles/#{article2.resource_id.to_s}",
?>   :article => { :content => "#{article2.content} Changed" })
=> " "
>> get_article_list
=> [#<OpenStruct published_at=Sun Sep 06 09:13:00 +0900 2009, resource_id=1, content="This is the first article!!", title="First Article">,
#<OpenStruct published_at=Sun Sep 06 18:17:00 +0900 2009, resource_id=2, content="This is the second article!\n Changed", title="Second Article">]

Processing ArticlesController#update (for 127.0.0.1 at 2009-09-07 00:22:03) [PUT]
  Parameters: {"article"=>{"content"=>"This is the second article!\n Changed"}, "id"=>"2"}
  Article Load (0.2ms)   SELECT * FROM "articles" WHERE ("articles"."id" = 2) 
  Article Update (0.7ms)   UPDATE "articles" SET "content" = 'This is the second article!
 Changed', "updated_at" = '2009-09-07 00:22:03' WHERE "id" = 2
Completed in 12ms (View: 1, DB: 1) | 200 OK [http://localhost/articles/2]

>> RestClient.post(
?>   "http://localhost:3000/articles",
?>   :article => { :title => "Third Article", :content => "This is third article!!",
?>     :'published_at(1i)' => "2009", :'published_at(2i)'=> "9", :'published_at(3i)'=> "6",
?>     :'published_at(4i)' => "22", :'published_at(5i)' => "10"})
=> "<?xml version="1.0" encoding="UTF-8"?>\n
      <article>\n
        <content>This is third article!!</content>\n
        <created-at type="datetime">2009-09-07T00:33:11+09:00</created-at>\n
        <id type="integer">3</id>\n
        <published-at type="datetime">2009-09-06T22:10:00+09:00</published-at>\n
        <title>Third Article</title>\n
        <updated-at type="datetime">2009-09-07T00:33:11+09:00</updated-at>\n
      </article>\n"

Processing ArticlesController#create (for 127.0.0.1 at 2009-09-07 00:33:11) [POST]
  Parameters: {"article"=>{"title"=>"Third Article", "published_at(1i)"=>"2009", "content"=>"This is third article!!", "published_at(2i)"=>"9", "published_at(3i)"=>"6", "published_at(4i)"=>"22", "published_at(5i)"=>"10"}}
  Article Create (37.3ms)   INSERT INTO "articles" ("updated_at", "title", "content", "published_at", "created_at") VALUES('2009-09-07 00:33:11', 'Third Article', 'This is third article!!', '2009-09-06 22:10:00', '2009-09-07 00:33:11')
Completed in 51ms (View: 2, DB: 37) | 201 Created [http://localhost/articles]

>> article1 = get_article_list[0]
=> #<OpenStruct published_at=Sun Sep 06 09:13:00 +0900 2009, resource_id=1, content="This is the first article!!", title="First Article">
>> RestClient.delete "http://localhost:3000/articles/#{article1.resource_id.to_s}"
=> " "
>> get_article_list
=> [#<OpenStruct published_at=Sun Sep 06 18:17:00 +0900 2009, resource_id=2, content="This is the second article!\n Changed", title="Second Article">,
    #<OpenStruct published_at=Sun Sep 06 22:10:00 +0900 2009, resource_id=3, content="This is third article!!", title="Third Article">]

Processing ArticlesController#destroy (for 127.0.0.1 at 2009-09-07 00:47:24) [DELETE]
  Parameters: {"id"=>"1"}
  Article Load (0.2ms)   SELECT * FROM "articles" WHERE ("articles"."id" = 1) 
  Article Destroy (0.6ms)   DELETE FROM "articles" WHERE "id" = 1
Completed in 10ms (View: 1, DB: 1) | 200 OK [http://localhost/articles/1]

>> RestClient.get 'https://taro:password@api.del.icio.us/v1/posts/update'
=> "<?xml version="1.0" encoding="UTF-8"?>\n
      <update time="2009-09-06T07:23:43Z" inboxnew="0"/>\n
      <!-- fe10.feeds.del.ac4.yahoo.net compressed/chunked Sun Sep  6 09:09:45 PDT 2009 -->\n"

>> RestClient.log = 'stdout'
=> "stdout"
>> RestClient.get 'https://taro:password@api.del.icio.us/v1/posts/update'
RestClient.get "https://drtaka:fastone13@api.del.icio.us/v1/posts/update"
# => 200 OK | text/xml 179 bytes
=> "<?xml version="1.0" encoding="UTF-8"?>\n
      <update time="2009-09-06T07:23:43Z" inboxnew="0"/>\n
      <!-- fe10.feeds.del.ac4.yahoo.net compressed/chunked Sun Sep  6 09:09:45 PDT 2009 -->\n"

>> (RestClient.get 'http://localhost:3000/articles').headers
=> {:etag=>""33ccfb63496b854f2bd158a91962a48a"",
    :x_runtime=>"13",
    :content_type=>"application/xml; charset=utf-8",
    :cache_control=>"private, max-age=0, must-revalidate",
    :content_length=>"793",
    :connection=>"close",
    :date=>"Sun, 06 Sep 2009 16:17:11 GMT"}

$ cd ~/.emacs.d
$ git clone git://github.com/michaelklishin/cucumber.el.git cucumber

(add-to-list 'load-path "~/.emacs.d/cucumber")
(autoload 'feature-mode "feature-mode" "Mode for editing cucumber files" t)
(add-to-list 'auto-mode-alist '("\\.feature$" . feature-mode))

$ sudo gem install radiant

$ radiant -v
Radiant 0.8.0
$ radiant -h
Usage: /opt/local/bin/radiant /path/to/radiant/app [options]

Options:
    -r, --ruby=path                  Path to the Ruby binary of your choice (otherwise scripts use env, dispatchers current path).
                                     Default: /opt/local/bin/ruby
    -d, --database=name              Preconfigure for selected database (options: mysql, postgresql, sqlite3, sqlserver).
                                     Default: mysql

Radiant Info:
    -v, --version                    Show the Radiant version number and quit.
    -h, --help                       Show this help message and quit.

General Options:
    -p, --pretend                    Run but do not make any changes.
    -f, --force                      Overwrite files that already exist.
    -s, --skip                       Skip files that already exist.
    -q, --quiet                      Suppress normal output.
    -t, --backtrace                  Debugging: show backtrace on errors.
    -c, --svn                        Modify files with subversion. (Note: svn must be in path)

$ radiant -d sqlite3 my-app

$ cd my-app
$ rake production db:bootstrap
(in /Users/hoge/work/radiant/my-app)
This task will destroy any data in the database. Are you sure you want to 
continue? [yn] y
==  CreateRadiantTables: migrating ============================================
...
Create the admin user (press enter for defaults).
Name (Administrator): 
Username (admin): 
Password (radiant): 

Initializing configuration.........OK

Select a database template:
1. Empty
2. Roasters (a coffee-themed blog / brochure)
3. Simple Blog
4. Styled Blog
[1-4]: 2

Creating Snippets....OK
Creating Pages....OK
Creating Layouts....OK
Creating Page parts....OK

Finished.

$ script/server -e production
=> Booting Mongrel
=> Rails 2.3.2 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server

$ sudo gem install heroku
Password:
Building native extensions.  This could take a while...
Successfully installed rest-client-1.0.3
Successfully installed configuration-0.0.5
Successfully installed launchy-0.3.3
Successfully installed json-1.1.7
Successfully installed heroku-1.0
5 gems installed
Installing ri documentation for rest-client-1.0.3...
Installing ri documentation for configuration-0.0.5...
Installing ri documentation for launchy-0.3.3...
Installing ri documentation for json-1.1.7...
Installing ri documentation for heroku-1.0...
Installing RDoc documentation for rest-client-1.0.3...
Installing RDoc documentation for configuration-0.0.5...
Installing RDoc documentation for launchy-0.3.3...
Installing RDoc documentation for json-1.1.7...
Installing RDoc documentation for heroku-1.0...

$ cd ~/work/
$ git clone git://github.com/sinatra/heroku-sinatra-app dr-heroku-sinatra-test
Initialized empty Git repository in /Users/hoge/work/dr-heroku-sinatra-test/.git/
remote: Counting objects: 38, done.
remote: Compressing objects: 100% (32/32), done.
remote: Total 38 (delta 8), reused 0 (delta 0)
Receiving objects: 100% (38/38), 5.58 KiB, done.
Resolving deltas: 100% (8/8), done.
$ cd dr-heroku-sinatra-test/

$ heroku create dr-heroku-sinatra-test
Enter your Heroku credentials.
Email: hoge@designrecipe.jp
Password: 
Uploading ssh public key /Users/hoge/.ssh/id_rsa.pub
Created http://dr-heroku-sinatra-test.heroku.com/ | git@heroku.com:dr-heroku-sinatra-test.git
Git remote heroku added

$ git config --list
user.name=Hoge Fuga
user.email=hoge@designrecipe.jp
color.ui=auto
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true
core.ignorecase=true
remote.origin.url=git://github.com/sinatra/heroku-sinatra-app
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
branch.master.remote=origin
branch.master.merge=refs/heads/master
remote.heroku.url=git@heroku.com:dr-heroku-sinatra-test.git
remote.heroku.fetch=+refs/heads/*:refs/remotes/heroku/*

$ git push heroku master
The authenticity of host 'heroku.com (75.101.145.87)' can't be established.
RSA key fingerprint is 8b:48:5e:67:0e:c9:16:47:32:f2:87:0c:1f:c8:60:ad.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'heroku.com,75.101.145.87' (RSA) to the list of known hosts.
Counting objects: 38, done.
Compressing objects: 100% (24/24), done.
Writing objects: 100% (38/38), 5.72 KiB, done.
Total 38 (delta 8), reused 38 (delta 8)

-----> Heroku receiving push
-----> Sinatra app detected
   Compiled slug size is 4K

-----> Launching...... done
   http://dr-heroku-sinatra-test.heroku.com deployed to Heroku

To git@heroku.com:dr-heroku-sinatra-test.git
 * [new branch]  master -> master

$ gem sudo install sinatra

$ cd ~/work
$ git clone git://github.com/adamwiggins/scanty.git
$ cd scanty
$ git checkout -b taka-blog
$ git branch
  master
* taka-blog

Blog = OpenStruct.new(
       :title => 'a scanty blog',
       :author => 'John Doe',
       :url_base => 'http://localhost:4567/',
       :admin_password => 'changeme',
       :admin_cookie_key => 'scanty_admin',
       :admin_cookie_value => '51d6d976913ace58',
       :disqus_shortname => nil
)

$ ruby main.rb

$ rake -T
(in /Users/taka/work/sinatra/scanty)
rake start  # Start the app server
rake stop   # Stop the app server

$ gem list sequel

*** LOCAL GEMS ***

sequel (3.2.0)

$ ruby main.rb 
./lib/post.rb:7: undefined method `table_exists?' for Post:Class (NoMethodError)

configure do
  Sequel::Model.plugin(:schema)  # 追加
  Sequel.connect(ENV['DATABASE_URL'] || 'sqlite://blog.db')

class Post < Sequel::Model
...
  # validate メソッドの追加
  def validate
    errors[:title] << "can't be empty" if title.empty?
    errors[:body] << "can't be empty" if body.empty?
  end

post '/posts' do
  auth
  post = Post.new(
    :title => params[:title],
    :tags => params[:tags],
    :body => params[:body],
    :created_at => Time.now,
    )

  # begin - resucue - end を追加
  begin
    post.save
    redirect post.url
  rescue Sequel::ValidationFailed
    erb :edit, :locals => { :post => post, :url => '/posts' }
  end
end

helpers do
  ...
  # なんちゃって error_message_for を追加
  def error_message_for(model)
    unless model.errors.size == 0
      html = ''
      html << '<ul>'
      model.errors.each do |k, v|
        html << "<li>#{k.to_s.capitalize} #{v.first}.</li>\n"
      end
      html << '</ul>'
    else
      ''
    end
  end
end

<%# error_message_for の呼び出しを追加 %>
<%= error_message_for(post) %>

  def self.make_slug(title)
    title.downcase.gsub(/ /, '_').gsub(/[^a-z0-9_]/, '').squeeze('_')
  end

<div class="postzoom">
  <h2 class="title"><input type="text" name="title" value="<%= post.title %>" /></h2>
  <p class="meta"><input type="text" name="slug" value="<%= post.slug %>" /></p> <!-- 追加 -->
  <p class="meta"><input type="text" name="tags" value="<%= post.tags %>" /></p>

post '/posts' do
  auth
  post = Post.new(
    :title => params[:title],
    :tags => params[:tags],
    :body => params[:body],
    :created_at => Time.now,
    :slug => params[:slug] # 追加
    )

class Post < Sequel::Model
  ...
  def validate
    errors[:title] << "can't be empty" if title.empty?
    errors[:slug] << "can't be empty" if slug.empty? # 追加
    errors[:body] << "can't be empty" if body.empty?
  end

class Post < Sequel::Model
....
  def to_html(markdown)
    h = Maruku.new(markdown).to_html
    h.gsub(/<code>([^<]+)<\/code>/m) do
      convertor = Syntax::Convertors::HTML.for_syntax "ruby"
      highlighted = convertor.convert($1)
      "<code>#{highlighted}</code>"
    end
  end
....

$ irb
>> require 'rubygems'
=> true
>> require 'maruku'
=> true
>> require 'syntax/convertors/html'
=> true
>> str = File.read('t.md')
=> "second!\n\nclass Hello\n   def hello\n puts 'hello!'\n   end\nend\n"
>> org_reg = Regexp.new('<code>([^<]+)</code>', Regexp::MULTILINE)
=> code[]codem
>> org_syn_convert_proc = lambda { "<code>#{Syntax::Convertors::HTML.for_syntax('ruby').convert($1)}</code>" }
=> #<Proc:0x0110169c@(irb):8>
>> org_h = Maruku.new(str).to_html
=> "<p>second!</p>\n\n
<pre><code>class Hello\n   def hello\n puts &#39;hello!&#39;\n   end\nend</code></pre>"
>> org_h.gsub(org_reg, &org_syn_convert_proc)
=> "<p>second!</p>\n\n
    <pre>
      <code>
        <pre>
          <span class="keyword">class </span>
          <span class="class">Hello</span>\n
          <span class="keyword">def </span>
          <span class="method">hello</span>\n
          <span class="ident">puts</span>
          <span class="punct">&amp;</span>
          <span class="comment">#39;hello!&amp;#39;</span>\n
          <span class="keyword">end</span>\n
          <span class="keyword">end</span>
        </pre>
      </code>
    </pre>"

>> require 'bluecloth'
=> true
>> changed_reg = Regexp.new('<pre><code>([^<]+)</code></pre>', Regexp::MULTILINE)
=> precode[]codeprem
>> changed_syn_convert_proc = lambda { Syntax::Convertors::HTML.for_syntax('ruby').convert($1) }
=> #<Proc:0x0108f27c@(irb):15>
>> b_h = BlueCloth.new(str).to_html
=> "<p>second!</p>\n\n<pre><code>class Hello\n   def hello\n puts 'hello!'\n   end\nend\n</code></pre>"
>> b_h.gsub(changed_reg, &changed_syn_convert_proc)
=> "<p>second!</p>\n\n
    <pre>
      <span class="keyword">class </span>
      <span class="class">Hello</span>\n
      <span class="keyword">def </span>
      <span class="method">hello</span>\n
      <span class="ident">puts</span>
      <span class="punct">'</span>
      <span class="string">hello!</span>
      <span class="punct">'</span>\n
      <span class="keyword">end</span>\n
      <span class="keyword">end</span>\n
    </pre>"

$ git diff
diff --git a/lib/post.rb b/lib/post.rb
index 3acb149..9f5c20b 100644
--- a/lib/post.rb
+++ b/lib/post.rb
@@ -1,4 +1,4 @@
-require File.dirname(__FILE__) + '/../vendor/maruku/maruku'
+require 'bluecloth'
 
 $LOAD_PATH.unshift File.dirname(__FILE__) + '/../vendor/syntax'
 require 'syntax/convertors/html'
@@ -56,11 +56,10 @@ class Post < Sequel::Model
   ########
 
   def to_html(markdown)
-    h = Maruku.new(markdown).to_html
-    h.gsub(/<code>([^<]+)<\/code>/m) do
+    h = BlueCloth.new(markdown).to_html
+    h.gsub(/<pre><code>([^<]+)<\/code><\/pre>/m) do
       convertor = Syntax::Convertors::HTML.for_syntax "ruby"
-      highlighted = convertor.convert($1)
-      "<code>#{highlighted}</code>"
+      convertor.convert($1)
     end
   end