新手问问题，照抄《Ruby on Rails实践》中的程序的问题，多谢

[rickey]

book_controller.rb中写
class BookController < ApplicationController

scaffold :book

end

运行http://127.0.0.1:3000/book/new
显示
NameError in BookController#new
uninitialized constant Book
RAILS_ROOT: ./script/../config/..

Application Trace | Framework Trace | Full Trace


……

This error occured while loading the following files:
book.rb
Request
Parameters: None

Show session dump

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


Response
Headers: {"cookie"=>[], "Cache-Control"=>"no-cache"}

请问是怎么回事，多谢多谢

[mathsfan]

最近我照着抄也出了不少问题，郁闷

[cloudgamer]

学习

[见丰]

可能是文档版本和你的环境版本不同。你如果想要达到那个效果，可以直接用命令
ruby script\generate scaffold book Book
试一试

[kaoruakira]

model 里有book.rb么