错误NoMethodError：对于ActionView :: Base：Class，未定义的方法`debug_rjs ='
这个项目是用rails 3.0.9构build的。
现在我更新了gem和Gemfile =>
source 'http://rubygems.org' gem 'rails', '3.1.1' # Bundle edge Rails instead: # gem 'rails', :git => 'git://github.com/rails/rails.git' gem 'pg' gem 'devise' gem "will_paginate" gem 'ruby-debug19' gem 'rack', '1.3.3' gem 'jquery-rails' 在rails之后，当我这样做时， http://0.0.0.0:3000/我得到这个错误=>
=> Booting WEBrick => Rails 3.1.1 application starting in development on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server [2011-10-10 17:50:23] INFO WEBrick 1.3.1 [2011-10-10 17:50:23] INFO ruby 1.9.2 (2011-02-18) [i686-linux] [2011-10-10 17:50:23] INFO WEBrick::HTTPServer#start: pid=3103 port=3000 [2011-10-10 17:50:31] ERROR NoMethodError: undefined method `debug_rjs=' for ActionView::Base:Class /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:34:in `block (3 levels) in <class:Railtie>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:33:in `each' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:33:in `block (2 levels) in <class:Railtie>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `each' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:216:in `<class:Base>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:133:in `<module:ActionView>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:8:in `<top (required)>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/abstract_controller/view_paths.rb:90:in `view_paths=' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/abstract_controller/view_paths.rb:76:in `prepend_view_path' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/engine.rb:532:in `block (2 levels) in <class:Engine>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `each' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:234:in `<class:Base>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:171:in `<module:ActionController>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:3:in `<top (required)>' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:31:in `ext' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:15:in `match?' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:47:in `call' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/engine.rb:456:in `call' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/rack/content_length.rb:16:in `call' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/rack/log_tailer.rb:14:in `call' /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/rack-1.3.3/lib/rack/handler/webrick.rb:59:in `service' /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
该怎么办 ？
RJS已经从Rails 3.1中抽象出来了，JQuery是新的默认。
http://weblog.rubyonrails.org/2011/4/21/jquery-new-default
如果你想使用RJS，你需要包括
gem 'prototype-rails'
在你的Gemfile中
如果您想为现有应用程序使用jQuery而不是RJS，请从config/environments/development.rb删除或注释以下行
# config.action_view.debug_rjs = true
您可能希望将它们添加到您的应用程序/ assets / javascripts / application.js中：
//= require prototype //= require prototype_ujs //= require effects //= require dragdrop //= require controls
https://github.com/rails/prototype-rails/blob/master/README#L15-19
