错误：`class_eval'：没有这样的文件或目录 - getcwd (Errno::ENOENT)答案

【问题标题】：Error: `class_eval': No such file or directory - getcwd (Errno::ENOENT)错误：`class_eval'：没有这样的文件或目录 - getcwd (Errno::ENOENT)
【发布时间】：2012-02-24 05:08:27
【问题描述】：

当我运行命令to generate a model

rails生成模型ip ip_address:string

我在控制台中收到以下错误

`class_eval': 没有这样的文件或目录 - getcwd (Errno::ENOENT)

错误描述：

  /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:407:in `class_eval': No such file or directory - getcwd (Errno::ENOENT)
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:91:in `register_klass_file'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:531:in `method_added'
from (eval):1:in `block in public_task'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:407:in `class_eval'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:407:in `block in public_task'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:406:in `each'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/thor-0.14.6/lib/thor/base.rb:406:in `public_task'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/generators/rails/app/app_generator.rb:162:in `<class:AppGenerator>'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/generators/rails/app/app_generator.rb:145:in `<module:Generators>'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/generators/rails/app/app_generator.rb:138:in `<module:Rails>'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/generators/rails/app/app_generator.rb:3:in `<top (required)>'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands/application.rb:17:in `<top (required)>'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/cli.rb:15:in `<top (required)>'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/gems/rails-3.1.1/bin/rails:7:in `<top (required)>'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/bin/rails:19:in `load'
from /home/cis/.rvm/gems/ruby-1.9.2-p290/bin/rails:19:in `<main>'

您能告诉我我应该怎么做才能生成模型吗？

【问题讨论】：

我使用的是 ruby 1.9.3 和 rails 3.2 版

标签： ruby-on-rails ruby ruby-on-rails-3 ruby-on-rails-3.2

【解决方案1】：

是的，我找到了原因：

原因是我在标签rails server --debugger中打开了webrick服务器

意味着如果 webrick 服务器已经在运行，我们不能运行任何命令，例如 scaffold generate model 将不起作用。

谢谢！

【讨论】：