无法使用 gruff gem 加载 Rails 应用程序

Question

我正在尝试加载使用 Gruff gem 的 Ruby on Rails 应用程序。我可以在irb 中很好地加载 Gruff，但是每当我尝试加载应用程序（通过 ruby script/server）时，它就会崩溃。这是完整的堆栈跟踪：

/opt/local/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:303:in `search': undefined method `empty?' for :gruff:Symbol (NoMethodError)
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:274:in `find_name'
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems.rb:259:in `activate'
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems.rb:67:in `gem'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/config/environment.rb:60
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:31:in `require'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in `rails'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `call'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `listener'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `call'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `initialize'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in `run'
    from /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in `load'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in `load'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:488:in `load'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/railties/lib/commands/servers/mongrel.rb:60
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
    from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:31:in `require'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'
    from /Users/mdippery/Projects/nees/ceespm/rails-server/vendor/rails/railties/lib/commands/server.rb:39
    from script/server:3:in `require'
    from script/server:3

我该如何解决这个问题，以便应用能够运行？

Answer 1

gem 是否需要直接安装到您的 rails 应用程序目录中？

来自here：

Rails 插件

Gruff 很容易与 Rails 一起使用。

gem install gruff
cd vendor/plugins && gem unpack gruff

如果您只完成了gem install gruff，这可能解释它不能在 rails 中工作，而是在 irb 中工作。