Ruby on rails 将rails应用程序从2.2.2升级到2.3.5

将应用程序从Rails 2.2.2升级到最新版本有多困难/复杂

我已经看到了一些从1.2版本等升级的rake任务，但没有看到任何关于较小增量升级的评论

谢谢

丹尼

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安装新的gem，更改Rails版本，并运行测试。代码中应该没有太多需要更改的地方。我不记得在升级到2.3.5时出现过任何主要（或次要）问题。

Hmm，我在一秒钟前就这样做了，现在如果我运行script/server，我会得到一个错误列表，而服务器不会启动。我已经编辑了上面的问题。

Error after upgrade

macbook:trunk danny$ script/server
=> Booting Mongrel
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
/Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010.  Use #requirement
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:105:in `const_missing': uninitialized constant Rails::Plugin::OpenIdAuthentication (NameError)
    from /Users/danny/Dropbox/SVN/railsapps/macandco/surveymanager/trunk/vendor/plugins/open_id_authentication/init.rb:16:in `evaluate_init_rb'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:182:in `call'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:182:in `evaluate_method'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:166:in `call'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:90:in `run'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:90:in `each'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:90:in `send'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:90:in `run'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:276:in `run_callbacks'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:51:in `send'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:51:in `run_prepare_callbacks'
    from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:631:in `prepare_dispatcher'
    from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:185:in `process'
    from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `send'
    from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `run'
    from /Users/danny/Dropbox/SVN/railsapps/macandco/surveymanager/trunk/config/environment.rb:12
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
    from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:84
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
    from script/server:3