RubyGem版本错误：rails（1.2.3 not> = 3.0）

Question

我正在维护一个古老的RoR站点，我们正在使用Django进行重写。当Rails刚刚起步时，该网站是由其他人撰写的，在我接触之前没有人更新它。一两个星期前，服务器出现故障，我怀疑是由于MySQL更新造成的。在试图解决它的过程中，我们破坏了它，现在混血儿不会开始。我看到这个在杂种日志：

/home/USER/rails/SITE/config/boot.rb:26:Warning: Gem::SourcUSERdex#search support for String patterns is deprecated, use #find_name 
/usr/local/lib/site_ruby/1.8/rubygems.rb:812:in `report_activate_error': RubyGem version error: rails(1.2.3 not >= 3.0) (Gem::LoadError) 
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:223:in `activate' 
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:258:in `activate' 
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:257:in `each' 
    from /usr/local/lib/site_ruby/1.8/rubygems.rb:257:in `activate' 
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:33:in `require' 
    from /home/USER/rails/SITE/config/environment.rb:24 
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:29:in `gem_original_require' 
    from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:29:in `require' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in `rails' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `call' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `listener' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `call' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `initialize' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/command.rb:212:in `run' 
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281 
    from /usr/local/bin/mongrel_rails:19:in `load' 
    from /usr/local/bin/mongrel_rails:19 

我搜索周围，试图诊断错误。它看起来像杂种希望我们有轨3+这是不可能的，因为我们将在几周内更换网站，并不想让它更新（它只需要工作现在为）。我如何强制杂种在当前版本的rails上运行？我们有RAILS_GEM_VERSION = '1.2.3' unless defined? RAILS_GEM_VERSION，我认为这会强制Rails 1.2.3。另外，这里输出gem list：

*** LOCAL GEMS *** 

abstract (1.0.0) 
actionmailer (3.2.2, 3.0.3, 1.3.3) 
actionpack (3.2.2, 3.0.3, 1.13.6, 1.13.3) 
actionwebservice (1.2.6, 1.2.3) 
activemodel (3.2.2, 3.0.3) 
activerecord (3.2.2, 3.0.3, 1.15.6, 1.15.3) 
activeresource (3.2.2, 3.0.3) 
activesupport (3.2.2, 3.0.3, 1.4.4, 1.4.2) 
acts_as_ferret (0.5.3, 0.4.3) 
arel (3.0.2, 2.0.7) 
builder (3.0.0, 2.1.2) 
bundler (1.1.0, 1.0.9) 
cgi_multipart_eof_fix (2.5.0) 
daemons (1.1.8, 1.1.0) 
erubis (2.7.0, 2.6.6) 
fastthread (1.0.7) 
ferret (0.11.6) 
gem_plugin (0.2.3) 
hike (1.2.1) 
i18n (0.6.0, 0.5.0) 
jk-ferret (0.11.8.3, 0.11.8.2) 
journey (1.0.3) 
json (1.6.5) 
mail (2.4.3, 2.2.15) 
mime-types (1.17.2, 1.16) 
mongrel (1.1.5) 
multi_json (1.1.0) 
polyglot (0.3.3, 0.3.1) 
rack (1.4.1, 1.2.1) 
rack-cache (1.2) 
rack-mount (0.8.3, 0.6.13) 
rack-ssl (1.3.2) 
rack-test (0.6.1, 0.5.7) 
rails (1.2.3) 
railties (3.2.2, 3.0.3) 
rake (0.9.2.2, 0.8.7) 
rdoc (3.12) 
sprockets (2.1.2) 
thor (0.14.6) 
tilt (1.3.3) 
treetop (1.4.10, 1.4.9) 
tzinfo (0.3.32, 0.3.24) 

感谢您的任何和所有帮助！

---

好的，我想通了。这是不兼容的宝石（S）。幸运的是，我们有一台测试服务器和一台生产服务器。我们昨晚只与测试服务器混淆了（生产服务器上的杂交器正在工作），所以我在两台服务器上都做了gem list，结果发现测试服务器有不同的列表。我只是在测试服务器上安装并卸载了gem，直到gem list在两台服务器上生成相同的列表。

Answer 1

Mongrel确实需要最新的rails版本，但是你的应用需要rails 1.2.3，所以会有冲突。

避免宝石冲突的最简单方法是使用不同的gemsets（使用rvm或rbenv）。或者，如果它没有使用，请移除导轨3宝石...