样式表或JavaScript文件的Rails 404错误
Rails无法在生产中加载（404错误）CSS和JS文件，但在开发中加载它们没有问题。
我正在使用Capistrano进行部署和运行Rails 3.我的开发路径是/ www / myapp，但我的生产路径是/ www / myapp / current 。
应用程序本身似乎工作正常，因此问题似乎与CSS / JS文件隔离。
我尝试在环境/ production.rb中将RAILS_ROOT变量设置为/ www / myapp / current ，但它没有任何区别，文件仍然无法加载。
这是生产日志中的完整堆栈：
Started GET "/stylesheets/scaffold.css?1280867531" for 98.173.61.21 at 2010-08-04 17:04:05 -0700 ActionController::RoutingError (No route matches "/stylesheets/scaffold.css"): /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/actionpack-3.0.0.beta4/lib/action_dispatch/middleware/show_exceptions.rb:55:in `call' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/railties-3.0.0.beta4/lib/rails/rack/logger.rb:14:in `call' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/rack-1.1.0/lib/rack/runtime.rb:17:in `call' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/rack-1.1.0/lib/rack/lock.rb:11:in `block in call' :10:in `synchronize' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/rack-1.1.0/lib/rack/lock.rb:11:in `call' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/railties-3.0.0.beta4/lib/rails/application.rb:145:in `call' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/railties-3.0.0.beta4/lib/rails/application.rb:81:in `method_missing' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:642:in `process_client' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:715:in `block in worker_loop' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:713:in `each' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:713:in `worker_loop' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:604:in `block (2 levels) in spawn_missing_workers' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:601:in `fork' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:601:in `block in spawn_missing_workers' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:597:in `each' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:597:in `spawn_missing_workers' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:611:in `maintain_worker_count' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:270:in `start' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/lib/unicorn.rb:29:in `run' /usr/local/rvm/gems/ruby-1.9.2-rc2/gems/unicorn-1.1.2/bin/unicorn:123:in `' /usr/local/rvm/gems/ruby-1.9.2-rc2/bin/unicorn:19:in `load' /usr/local/rvm/gems/ruby-1.9.2-rc2/bin/unicorn:19:in `' 错误消息看起来像您的Rails应用程序正在获取静态文件的请求。 默认情况下，Rails 3不提供静态文件，因为Web服务器可以做得更好。 您应该检查您的网络服务器的配置。 它应配置为首先查看，如果请求的公共目录中存在静态文件，并且仅将请求转发到Rails应用程序（如果没有静态文件）。
或者，您可以在config / environments / production.rb中启用Rails以提供config.serve_static_assets = true静态文件。 但是，这不建议在生产中使用，因为您真的不应该浪费Rails应用程序的处理资源只是为了提供静态文件。 最好告诉网络服务器这样做。
我通过运行此命令修复了此问题：
RAILS_ENV=production rake assets:precompile
参考： http ： //guides.rubyonrails.org/asset_pipeline.html
我的环境是Nginx + Unicorn + Rails4