5

我最近决定将我的几个 Rails 应用程序中的一些功能提取到一个引擎中。我现在已经完成了引擎，我正在尝试将完成的 gem 安装到我的一个应用程序中。

这个特定的 gem 不是我想要公开的东西，所以我将 gem 打包gem build my_gem.gemspec，然后将打包的 gem 放在我的应用程序的 vendor/gems 文件夹中。然后，我添加gem 'my_gem', '0.0.1', :path => 'vendor/gems'到我的 gemfile 并运行bundle install.

不幸的是，Rails 似乎没有加载 gem，我似乎无法手动要求它：

$ bundle exec rails console --sandbox
Loading development environment in sandbox (Rails 3.2.11)
Any modifications you make will be rolled back on exit
irb(main):001:0> MyGem
NameError: uninitialized constant MyGem
        from (irb):1
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands/console.rb:47:in `start'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands/console.rb:8:in `start'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:41:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'
irb(main):002:0> require 'my_gem'
LoadError: cannot load such file -- my_gem
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `block in require'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
        from (irb):2
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands/console.rb:47:in `start'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands/console.rb:8:in `start'
        from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:41:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

难道我做错了什么？我该如何解决？

编辑：这是我的 gem 环境信息。

$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.16
  - RUBY VERSION: 1.9.3 (2012-02-16 patchlevel 125) [i386-mingw32]
  - INSTALLATION DIRECTORY: c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1
  - RUBY EXECUTABLE: c:/RailsInstaller/Ruby1.9.3/bin/ruby.exe
  - EXECUTABLE DIRECTORY: c:/RailsInstaller/Ruby1.9.3/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-mingw32
  - GEM PATHS:
     - c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1
     - c:/Users/Ajedi32/.gem/ruby/1.9.1
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/
4

1 回答 1

4

键入gem env以检查 Ruby 在哪里搜索 gem。

然后，您希望将放置 gem 的目录附加到 GEM_PATH 环境变量中。例如：

  export GEM_PATH="./vendor/gems:$GEM_PATH"

另见： http ://docs.rubygems.org/read/chapter/12

如果您使用的是 Gemfile，您也可以这样做：

  gem 'my-gem', '0.0.1', :path => 'vendor/gems/my-gem'

（您必须将 gem 目录的名称添加到路径中）

于 2013-04-28T21:23:40.860 回答