要求Sinatra gem的错误

Question

我很难在我的本地设置Ubuntu Karmic 9.10上运行Sinatra。 当我需要'sinatra'时抛出的错误是：

NoMethodError: undefined method `[]' for nil:NilClass
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:891:in `compile'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:883:in `gsub'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:883:in `compile'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:856:in `route'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:838:in `get'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:1077
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:929:in `configure'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:1076
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra.rb:4
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from (irb):2
from :0

我试过了：

• 卸载/重新安装Sinatra
• 更新所有宝石
• 确保所有依赖项都存在（机架）

有任何想法吗？ 非常感谢您的时间和帮助！

Answer 1

这显然是一个问题，在Linux上只有1.8-head。 它与regexp匹配有关。 如果您看一下代码： path确实匹配/((:\\w+)|[\\*#{special_chars.join}])/ ，但是$2为nil ，即使它应该是String。

我建议暂时切换您的红宝石版本。