升级Rails 3.1时资产Rails 3.2.8的路由错误

Question

当我从3.1.1 Rails升级到3.2.8时，看到样式表，图像的路由错误确实令人沮丧。 尝试了“ bundle exec rails server”命令，还尝试了在文件中一个接一个地添加gems，也没有用:(

ActionController::RoutingError (No route matches [GET] "/stylesheets/application.css"):
  actionpack (3.2.8) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.8) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:in `call'
  railties (3.2.8) lib/rails/engine.rb:479:in `call'
  railties (3.2.8) lib/rails/application.rb:223:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'

Answer 1

链接到Rails中的资产时，请始终使用asset_path ， asset_url或依次调用它们的帮助函数之一（ image_path ， image_url ， javascript_include_tag ， stylesheet_link_tag ）。

就您而言，它看起来像您在应用程序布局中对/stylesheets/application.css进行了硬编码。 只需将代码更改为类似

<%= stylesheet_link_tag :application %>

并且它应该正确指向/assets/application.css进行开发，并指向生产中的/assets/application-<sha1 hash>.css （编译资产时）。

另外，如果你有资产本地编译（如果您有任何东西public/assets是这样的话，你可能要rm -rf public/assets ，如果你在本地开发），那么你需要下面一行在您的config/application.rb ：

config.serve_static_assets = true