如何修复“未初始化的常量SampleApp”
我正在尝试运行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 `': 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 ' 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 ' 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 `' 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 ' 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 `' from script/rails:6:in `require' from script/rails:6:in `'
我正在使用Ruby 1.9.3p194（2012-04-20）[i386-mingw32]。
有什么想法？
根据第5章中的调试日志和Rails教程，我了解到你试图复制并粘贴路由文件：
SampleApp::Application.routes.draw do get "static_pages/home" ....... end
SampleApp在这里代表了应用程序的名称，并且从您的目录名称我认为它应该是MyApp 。
您的路线文件应该是：
MyApp::Application.routes.draw do get "static_pages/home" ....... end
这只是一个初看起来的猜测。