Ruby on Rails: RubyGem version error: rack(1.0.0 not ~> 1.0.1) (RuntimeError)
by Elton on 三.07, 2010, under Rails
当你升级了rails后，有时候会出现rack版本跟rails版本不匹配的情况。 当你执行./script/generate命令的时候，会出现以下错误信息：
1 2 3 4 5 6 7 8 9 10 11 | /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:271:in `require_frameworks': RubyGem version error: rack(1.0.0 not ~> 1.0.1) (RuntimeError) from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:134: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 /Volumes/Data/study/ruby/blog/config/environment.rb:9 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 /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/commands/generate.rb:1 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/generate:3 |
解决方案：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | $ sudo gem uninstall rack Select gem to uninstall: 1. rack-1.0.0 2. rack-1.1.0 3. All versions > 1 You have requested to uninstall the gem: rack-1.0.0 actionpack-2.3.5 depends on [rack (~> 1.0.0)] actionpack-2.3.4 depends on [rack (~> 1.0.0)] If you remove this gems, one or more dependencies will not be met. Continue with Uninstall? [Yn] y Successfully uninstalled rack-1.0.0 |
然后再执行
1 2 3 4 5 6 | sudo gem install -v=2.3.5 rails Successfully installed rack-1.0.1 1 gem installed Installing ri documentation for rack-1.0.1... Installing RDoc documentation for rack-1.0.1... |
问题解决
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三月 8th, 2010 on 11:26
可以尝试Rails 3.0 Beta
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