Ruby on rails - Error rails s命令

我在我的Win7机器上安装了Rails安装程序，从http://railsinstaller.org/。我已经有了Ruby 1.9.2-p290。在通过安装程序安装ROR之后，我下雨了启动服务器，出现以下错误。任何人都可以帮我理解这个错误的原因吗？Ruby on rails - Error rails s命令

C:\Sites\ridemo>rails s 
=> Booting WEBrick 
=> Rails 3.1.0.rc6 application starting in development on http://0.0.0.0:3000 
=> Call with -d to detach 
=> Ctrl-C to shutdown server 
Exiting 
C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/actionpack-3.1.0.rc6/lib/sp 
rockets/railtie.rb:21:in `block (2 levels) in <class:Railtie>': undefined method 
`static_root=' for #<Sprockets::Environment:0x361d178> (NoMethodError) 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/sprockets-2.0. 
0/lib/sprockets/environment.rb:55:in `initialize' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/actionpack-3.1 
.0.rc6/lib/sprockets/railtie.rb:20:in `new' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/actionpack-3.1 
.0.rc6/lib/sprockets/railtie.rb:20:in `block in <class:Railtie>' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/initializable.rb:25:in `instance_exec' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/initializable.rb:25:in `run' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/initializable.rb:50:in `block in run_initializers' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/initializable.rb:49:in `each' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/initializable.rb:49:in `run_initializers' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/application.rb:92:in `initialize!' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/railtie/configurable.rb:30:in `method_missing' 
     from C:/Sites/ridemo/config/environment.rb:5:in `<top (required)>' 
     from C:/Sites/ridemo/config.ru:4:in `require' 
     from C:/Sites/ridemo/config.ru:4:in `block in <main>' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/builder.rb:51:in `instance_eval' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/builder.rb:51:in `initialize' 
     from C:/Sites/ridemo/config.ru:1:in `new' 
     from C:/Sites/ridemo/config.ru:1:in `<main>' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/builder.rb:40:in `eval' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/builder.rb:40:in `parse_file' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/server.rb:200:in `app' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/commands/server.rb:46:in `app' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/server.rb:301:in `wrapped_app' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/rack-1.3.2/lib 
/rack/server.rb:252:in `start' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/commands/server.rb:70:in `start' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/commands.rb:54:in `block in <top (required)>' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/commands.rb:49:in `tap' 
     from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.1.0 
.rc6/lib/rails/commands.rb:49:in `<top (required)>' 
     from script/rails:6:in `require' 
     from script/rails:6:in `<main>'

来源

2011-09-09 Ashish Gupta

https://github.com/rails/rails/issues/2740，尝试更新轨道到3.1 – Fabio

想知道为什么这个问题被低估？我只是RoR的初学者，遇到问题并在此提问。 –

@ydobonmai - 你会因为一个简单的google undefined方法static_root =''回答你的问题（很多次）而陷入低谷。 downvote的主要原因是'这个问题没有显示任何研究努力' –

需要运行以下命令，它解决了这个问题： -

gem install rails -v=3.1.0.rc8

从（https://github.com/sstephenson/sprockets/问题/ 172）

来源

2011-09-09 02:19:48

RailsInstaller现在支持Rails 3.1，但对以前的RC版本没有任何承诺。就像@Fabio说的那样，尝试更新到最新的Rails版本（在Gemfile中更改它）。另外，如果你已经安装了ruby版本，通过检查你的系统环境路径变量，确定你正在使用RailsInstaller。唯一的一个路径红宝石应该是：

C:\RailsInstaller\Ruby1.9.2\bin;

来源

2011-09-09 01:23:10 christianblais

Ruby on rails - Error rails s命令

回答

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