ror的问题

NoMethodError in ProjectController#index 
undefined method `scaffold' for ProjectController:Class
RAILS_ROOT: C:/Documents and Settings/juner/MyStatusReportApplication Trace | Framework Trace | Full Trace 
app/controllers/project_controller.rb:2
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:216:in `load_without_new_constant_ing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:216:in `load_file'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:355:in `new_constants_in'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:215:in `load_file'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:96:in `require_or_load'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:261:in `load_missing_constant'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:468:in `const_missing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:480:in `const_missing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:285:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:284:in `each'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:284:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/string/inflections.rb:143:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route_set.rb:386:in `recognize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:148:in `handle_request'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:107:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `synchronize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:35:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:112:in `handle_dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:78:in `service'
e:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
e:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:95:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `each'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:23:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:82:in `start'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:62:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/commands/servers/webrick.rb:66
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:510:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:355:in `new_constants_in'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:510:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/commands/server.rb:39
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
script/server:3
app/controllers/project_controller.rb:2
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:216:in `load_without_new_constant_ing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:216:in `load_file'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:355:in `new_constants_in'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:215:in `load_file'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:96:in `require_or_load'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:261:in `load_missing_constant'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:468:in `const_missing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:480:in `const_missing'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:285:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:284:in `each'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/inflector.rb:284:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/core_ext/string/inflections.rb:143:in `constantize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route_set.rb:386:in `recognize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:148:in `handle_request'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:107:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `synchronize'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:104:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
e:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/dispatcher.rb:35:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:112:in `handle_dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:78:in `service'
e:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
e:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:95:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `each'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:23:in `start'
e:/Ruby/lib/ruby/1.8/webrick/server.rb:82:in `start'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/webrick_server.rb:62:in `dispatch'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/commands/servers/webrick.rb:66
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:510:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:355:in `new_constants_in'
e:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/dependencies.rb:510:in `require'
e:/Ruby/lib/ruby/gems/1.8/gems/rails-2.1.1/lib/commands/server.rb:39
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'
e:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'
script/server:3
Request
Parameters: NoneShow session dump--- 
flash: !map:ActionController::Flash::FlashHash {}
Response
Headers: {"cookie"=>[],
 "Cache-Control"=>"no-cache"}
我是严格按书上的做的但是到了 生成的时候就出这样的错误 不和书上的一样了 急求ror达人指教 谢谢