刚开始学Ruby On Rails 看的是那本经典的 Agile Web Development... 我用的是rails 2.0.2 在cart creation一章中所有的都没有问题。 开始的错误是“页面无法找到”，上网查了一下说是用如下的解决方式即加上两行代码 "model :cart model :line_item"
如下：
# Filters added to this controller apply to all controllers in the application. # Likewise, all the methods added will be available for all controllers.
class ApplicationController < ActionController::Base
helper :all # include all helpers, all the time
# See ActionController::RequestForgeryProtection for details # Uncomment the :secret if you're not using the cookie session store protect_from_forgery # :secret => '00df83fd9a7c900f90067f3893d03eb7'\
model :cart model :line_item
end
可是再次运行就报了这么一个错误：
NoMethodError undefined method `model' for ApplicationController:Class
