ruby-on-rails – Ruby Gems Path Weirdness

我已经在这个问题上追了好几天了,现在比以往任何时候都更远了.我正在运行Rails 3.1,Ruby 1.9,Gem 1.8.15,Linux RHEL 4环境.

简化的问题是ruby’require'(和rails)无法找到我的应用程序所需的所有宝石.并且似乎宝石需要找不到具有与* .rb不同的宝石名称.例如,“require’sass”’找到sass.rb.但是“require’therubyracer’”无法在lib中找到v8.rb.没有名为’therubyracer.rb’的文件.相同
与’therubyrhino’ – 没有’therubyrhino.rb’但是在lib中有一个’rhino.rb’.

即使这些gem在我的Gemfile中,Bundle install也不会抛出错误.

这是一个例子：

首先,要演示安装的gem：

>locate 'rhino.rb' 
  /usr/local/lib/ruby/gems/1.9.1/gems/therubyrhino-1.73.1/lib/rhino.rb
  /usr/local/lib/ruby/gems/1.9.1/gems/gems/therubyrhino-1.73.1/lib/rhino.rb

即使安装了“therubyrhino”,并且在路径和捆绑工作中,“宝石哪个”找不到它.这个宝石就在

与’sass’相同的路径,在下面,它可以找到.这是错误：

gem which 'therubyrhino'
  ERROR:  Can't find ruby library file or shared library therubyrhino

请注意,gem可以在gem中找到rhino.rb文件,因此路径必须正常工作.

>gem which rhino
  /usr/local/lib/ruby/gems/1.9.1/gems/therubyrhino-1.73.1/lib/rhino.rb

要求不喜欢rhino.rb：

ruby -rubygems -e 'require "rhino"'
  /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in  ` 
  require': no such file to load -- java (LoadError)

并且它无法通过名称找到宝石.

ruby -rubygems -e 'require "therubyrhino"'
      /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in ` require': 
      no such file to load -- therubyrhino (LoadError) from 
     /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in ` require'

但正如我所提到的,我的Gemfile中有’therubyrhino’,Bundle安装有效.

这是我的宝石路径,我手动设置测试：

>export GEM_PATH=/usr/local/lib/ruby/gems/1.9.1:/usr/local/lib/ruby/gems/1.9.1/gems:/usr/local/lib/ruby/gems/1.9.1/gems/gem

>gem env
  ...

RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.15
  - RUBY VERSION: 1.9.2 (2011-07-09 patchlevel 290) [i686-linux]
  - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.9.1
  - RUBY EXECUTABLE: /usr/local/bin/ruby
  - EXECUTABLE DIRECTORY: /usr/local/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-linux
  - GEM PATHS:
     - /usr/local/lib/ruby/gems/1.9.1
     - /usr/local/lib/ruby/gems/1.9.1/gems
     - /usr/local/lib/ruby/gems/1.9.1/gems/gem
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/

最后,这是一个生活很美好并需要工作的案例.一切都很好,并且gem name = lib name(… / sass / lib / sass.rb)的前缀.首先我们可以看到安装了sass gem：

>locate sass.rb  
  /usr/local/lib/ruby/gems/1.9.1/gems/sass-3.1.14/lib/sass.rb
  /usr/local/lib/ruby/gems/1.9.1/gems/haml-3.1.4/vendor/sass/lib/sass.rb
  /usr/local/lib/ruby/gems/1.9.1/gems/haml-3.1.4/lib/sass.rb

宝石可以找到吗？是.

>gem which sass
  /usr/local/lib/ruby/gems/1.9.1/gems/haml-3.1.4/lib/sass.rb

ruby’需要’工作吗？是.

>ruby -rubygems -e 'require "sass"' 
  (no error)

谢谢你的帮助.

$irb
1.9.3p0 :001 > gem 'therubyracer'
 => true 
1.9.3p0 :002 > require 'v8'
 => true