未初始化的常量ActiveSupport :: Dependencies :: Mutex（NameError）

问题描述

  / usr / lib / ruby​​当我想创建一个Ruby on Rails项目时，我收到了下面的消息。 /gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:55：未初始化的常量ActiveSupport :: Dependencies :: Mutex（NameError）$ / $ / b / from /usr/local/lib/site_ruby/1.8 /rubygems/custom_require.rb:36:in`gem_original_require'
 from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in`require'$ from bb / usr / lib /ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support.rb:57 $ / b / b from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in`gem_original_require' $ / b / b从/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in`require'
 from /usr/lib/ruby/gems/1.8/gems/rails-2.3。 8 / lib / rails_generator.rb：31 / $ / $ / b / b / from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in`gem_original_require'
 from / usr / local / lib / site_ruby /1.8/rubygems/custom_require.rb:36:in`require'
 from /usr/lib/ruby/gems/1.8/gems/rails-2.3.8/bin/rails:15从/ usr / bin / rails获得
：19：在`load'
从/ usr / bin / rails：19 
  

出了什么问题？我该如何解决它？

解决方案

这是Rails 2.3.8和最近版本的RubyGems之间的不兼容。升级到最新的2.3版本（截至今日2.3.11）。

When I want to create a Ruby on Rails project, I get the message below.

/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:55: uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support.rb:57
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails_generator.rb:31
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/gems/1.8/gems/rails-2.3.8/bin/rails:15
    from /usr/bin/rails:19:in `load'
    from /usr/bin/rails:19

What has gone wrong? How do I to fix it?

解决方案

This is an incompatibility between Rails 2.3.8 and recent versions of RubyGems. Upgrade to the latest 2.3 version (2.3.11 as of today).

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