Historical Log

NetBeans　チュートリアル進まず（おそらくrails1.2系とrails2.0系の違い）

Databaseは作成できたが、チュートリアルどおり進まない。

NoMethodError in BlogController#index

undefined method `title’ for BlogController:Class

RAILS_ROOT: C:/Documents and Settings/Miyai/My Documents/NetBeansProjects/rubyweblog
Application Trace | Framework Trace | Full Trace

app/controllers/blog_controller.rb:2

C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:215:in `load_without_new_constant_marking’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:215:in `load_file’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:214:in `load_file’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:95:in `require_or_load’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:260:in `load_missing_constant’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:467:in `const_missing’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:479:in `const_missing’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/inflector.rb:283:in `constantize’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/core_ext/string/inflections.rb:143:in `constantize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/routing/route_set.rb:386:in `recognize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:148:in `handle_request’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:107:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `synchronize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:35:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:112:in `handle_dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:78:in `service’
C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service’
C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run’
C:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread’
C:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread’
C:/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each’
C:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:62:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/servers/webrick.rb:66
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/server.rb:39
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
script/server:3

app/controllers/blog_controller.rb:2
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:215:in `load_without_new_constant_marking’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:215:in `load_file’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:214:in `load_file’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:95:in `require_or_load’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:260:in `load_missing_constant’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:467:in `const_missing’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:479:in `const_missing’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/inflector.rb:283:in `constantize’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/core_ext/string/inflections.rb:143:in `constantize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/routing/route_set.rb:386:in `recognize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:148:in `handle_request’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:107:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `synchronize’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi’
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:35:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:112:in `handle_dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:78:in `service’
C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service’
C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run’
C:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread’
C:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread’
C:/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each’
C:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start’
C:/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:62:in `dispatch’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/servers/webrick.rb:66
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in’
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in `require’
C:/ruby/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/server.rb:39
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
script/server:3

Request

Parameters:

None

Show session dump

—
flash: !map:ActionController::Flash::FlashHash {}

Response

Headers:

{“cookie”=>[],
“Cache-Control”=>”no-cache”}

おそらく、rails1.2系と、rails2.0系のscaffoldに違いによるエラー

教えて！ Watch Ruby on Rails について

——————————————————-
1.railsコマンドでひな形を作成
※rails2.0ではデフォルトのDBがSQLite3なので、mysqlで使う場合は”-d mysql”オプションが必要かもです。
2.database.ymlを修正
3.おもむろにscaffold実行
ruby script/generate scaffold pepole name:string age:integer
4.dbにデータベースを作る
5.mygrateする
rake db:migrate
6.serverをスタートする
——————————————————-
↓
NetBeansのチュートリアル手順を改造するとこんな感じか
——————————————————-
１．db内にデータベース作成する。
２．初期ウィザードで、Mysql指定（これでdatabase.ymlも自動生成）
３．scaffold生成
４．mygrationファイル修正
５．mygrate
６．実行！
——————————————————-

明日やってみる。

■他、参考サイト
Ruby on Rails 2.0以降　scaffoldの違い – 『どこでもドア的』プロジェクト

Tags: Ruby on Rails