我安装了一些gem,我正在尝试在Ruby应用程序中使用它们：
require 'rubygems' require 'mygem'
但是,当我运行应用程序时,我收到此错误：< internal：lib / rubygems / custom_require>：29：inrequire’：没有要加载的文件 – mygem(LoadError)
但是,如果我尝试在irb中使用gem(确保首先要求’rubygems’),它可以正常工作.我应该做些什么？我试着谷歌搜索这个问题,但不明白.
在ruby,gem和irb上运行一个表明它们都在/ opt / local / bin /中,即
> which ruby /opt/local/bin/ruby > which gem /opt/local/bin/gem > which irb /opt/local/bin/irb
更新回答提出的问题(是的,irb和ruby指向不同的文件夹)：
$LOAD_PATH和$：in irb都包含似乎指向ruby 1.8文件夹：
/opt/local/lib/ruby/site_ruby/1.8 /opt/local/lib/ruby/site_ruby/1.8/i686-darwin10 /opt/local/lib/ruby/site_ruby /opt/local/lib/ruby/vendor_ruby/1.8 /opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin10 /opt/local/lib/ruby/vendor_ruby /opt/local/lib/ruby/1.8 /opt/local/lib/ruby/1.8/i686-darwin10 .
$：in ruby指向ruby 1.9.1文件夹：
/usr/local/lib/ruby/site_ruby/1.9.1 /usr/local/lib/ruby/site_ruby/1.9.1/i386-darwin9.8.0 /usr/local/lib/ruby/site_ruby /usr/local/lib/ruby/vendor_ruby/1.9.1 /usr/local/lib/ruby/vendor_ruby/1.9.1/i386-darwin9.8.0 /usr/local/lib/ruby/vendor_ruby /usr/local/lib/ruby/1.9.1 /usr/local/lib/ruby/1.9.1/i386-darwin9.8.0
gem env节目
RubyGems Environment:
- RUBYGEMS VERSION: 1.4.1
- RUBY VERSION: 1.8.7 (2010-12-23 patchlevel 330) [i686-darwin10]
- INSTALLATION DIRECTORY: /opt/local/lib/ruby/gems/1.8
- RUBY EXECUTABLE: /opt/local/bin/ruby
- EXECUTABLE DIRECTORY: /opt/local/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86-darwin-10
- GEM PATHS:
- /opt/local/lib/ruby/gems/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- "gempath" => ["/opt/local/lib/ruby/gems/1.8"]
- :sources => ["http://rubygems.org/","http://gems.github.com","http://gems.github.com"]
- REMOTE SOURCES:
- http://rubygems.org/
- http://gems.github.com
- http://gems.github.com
irb中的Gem.path指向
/Users/grautur/.gem/ruby/1.8 /usr/local/lib/ruby/gems/1.8
红宝石中的Gem.path指向
/Users/grautur/.gem/ruby/1.9.1 /usr/local/lib/ruby/gems/1.9.1
解决方法
我不确定发生了什么事.但是,以下内容可能有所帮助.
在irb,做
require 'rubygems' require 'mygem' puts $:
然后,在红宝石中,做
require 'rubygems' puts $:
如果你还没有解决问题,请告诉我们你得到了什么.
编辑：还打印出在命令行上执行gem env的结果.
编辑2：看看如果你在irb和ruby中都需要rubygems后输入Gem.path会发生什么.见thanks to Matt for describing Rubygems