Gem的未定义方法“source\u index”：模块（NoMethodError）

Question

我正在运行Rails 2.3.5应用程序，在运行脚本/服务器时，我看到了以下内容：

./script/../config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21:in `add_frozen_gem_path': undefined method `source_index' for Gem:Module (NoMethodError)
    from ./script/../config/boot.rb:60:in `load_initializer'
    from ./script/../config/boot.rb:44:in `run'
    from ./script/../config/boot.rb:17:in `boot!'
    from ./script/../config/boot.rb:123
    from script/server:2:in `require'
    from script/server:2

如果我在boot中注释掉第60行。rb（Rails：：GemDependency.add\u freeze\u gem\u path）并运行脚本/服务器，我得到了以下结果：

=> Booting WEBrick
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
./script/../config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21:in `add_frozen_gem_path': undefined method `source_index' for Gem:Module (NoMethodError)
    from ./script/../config/../vendor/rails/railties/lib/initializer.rb:298:in `add_gem_load_paths'
    from ./script/../config/../vendor/rails/railties/lib/initializer.rb:132:in `process'
    from ./script/../config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
    from ./script/../config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
    from /home/developer/bigpink/config/environment.rb:13
    from /home/developer/bigpink/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
    from /home/developer/bigpink/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
    from /home/developer/bigpink/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /home/developer/bigpink/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
    from /home/developer/bigpink/vendor/rails/railties/lib/commands/server.rb:84
    from script/server:3:in `require'
    from script/server:3

所以，我真的不知道该怎么办。希望我能得到一些快速的帮助。谢谢

Answer 1

这帮助了我：http://djellemah.com/blog/2013/02/27/rails-23-with-ruby-20/

我将其与gem更新（system 1.8.25）结合使用，您的案例可能不需要它。

Answer 2

对于rvm用户，

rvm install rubygems 1.8.2 --force

Answer 3

我自己在尝试将旧的Rails应用程序从REE 1.8.7升级到1.9.3-p385时遇到了这个问题。奇怪的是，Ruby 1.9.3-p327运行得很好。归根结底，ruby-1.9.3-p385为我安装了RubyGems版本2.0.2，1.9.3-p327安装了RubyGems版本1.8.23。

Gem。source_索引已经被弃用了一段时间，但由于Rails 2.3除了关键的安全补丁之外没有得到任何更新，这将永远不会得到修复。RubyGems v2.0最终删除了该方法。降级到2.0.0之前的任何rubygems版本，比如1.8.25，以暂时恢复功能。您可以使用gem update-system 1.8.25获得兼容版本。

重要的是，Rails 2.3.5至少需要更新到2.3.17。有一些严重的安全漏洞会让你面临一些非常恶劣的攻击。从长远来看，升级到3。x需要被视为一种非常强烈的需求。