如何解决“未初始化不断SampleApp”

Question

我试图运行rails server，我看到的是这样的：

C:\Users\Mama i Tata>cd c:/rails_project/my_app 

c:\rails_project\my_app>rails s 
=> Booting WEBrick 
=> Rails 3.2.6 application starting in development on http://0.0.0.0:3000 
=> Call with -d to detach 
=> Ctrl-C to shutdown server 
Exiting 
c:/rails_project/my_app/config/routes.rb:1:in `<top (required)>': uninitialized 
constant SampleApp (NameError) 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:40:in `block in load_paths' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:40:in `each' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:40:in `load_paths' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:16:in `reload!' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:26:in `block in updater' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_ 
support/file_update_checker.rb:78:in `call' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_ 
support/file_update_checker.rb:78:in `execute' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/routes_reloader.rb:27:in `updater' 
    from C:in `execute_if_updated' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation/finisher.rb:66:in `block in <module:Finisher>' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia 
lizable.rb:30:in `instance_exec' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia 
lizable.rb:30:in `run' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia 
lizable.rb:55:in `block in run_initializers' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia 
lizable.rb:54:in `each' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia 
lizable.rb:54:in `run_initializers' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic 
ation.rb:136:in `initialize!' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/railti 
e/configurable.rb:30:in `method_missing' 
    from c:/rails_project/my_app/config/environment.rb:5:in `<top (required) 

    from c:/rails_project/my_app/config.ru:4:in `require' 
    from c:/rails_project/my_app/config.ru:4:in `block in <main>' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb: 
51:in `instance_eval' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb: 
51:in `initialize' 
    from c:/rails_project/my_app/config.ru:1:in `new' 
    from c:/rails_project/my_app/config.ru:1:in `<main>' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb: 
40:in `eval' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb: 
40:in `parse_file' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/server.rb:2 
00:in `app' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman 
ds/server.rb:46:in `app' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/server.rb:3 
01:in `wrapped_app' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/server.rb:2 
52:in `start' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman 
ds/server.rb:70:in `start' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman 
ds.rb:55:in `block in <top (required)>' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman 
ds.rb:50:in `tap' 
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman 
ds.rb:50:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>' 

我使用Ruby 1.9.3p194（2012-04-20） I386-的mingw32]。

有什么想法吗？

Answer 1

按照调试日志，并在第5章Rails的教程中，我的理解是你试图复制并粘贴路线文件：

SampleApp::Application.routes.draw do 
    get "static_pages/home" 
    ....... 
end 

SampleApp这里表示从目录中的应用程序和名称名字我认为应该是MyApp。

你的路由文件应该是：

MyApp::Application.routes.draw do 
    get "static_pages/home" 
    ....... 
end 

这只是一个先看看猜测。