Question

问题

我有一个Rails 3.0.4应用程序，我按照Railscast video: "Upgrading to rails 3.1"的说明升级到3.1.4。

现在我遇到了资产的问题，因为未解决，在服务器日志中发送消息如下：

Started GET "/assets/application.css" for 127.0.0.1 at 2012-04-08 03:57:13 -0500
Served asset /application.css - 404 Not Found (15ms)

ActionController::RoutingError (No route matches [GET] "/assets/application.css"):
Rendered /usr/local/rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.1.4/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (14.3ms)

Started GET "/assets/application.js" for 127.0.0.1 at 2012-04-08 03:57:13 -0500
Served asset /application.js - 404 Not Found (35ms)

ActionController::RoutingError (No route matches [GET] "/assets/application.js"):

这些文件位于assets目录：

$ ls app/assets/*/application*
app/assets/javascripts/application.js   app/assets/stylesheets/application.css

并包含此内容：

$ cat app/assets/javascripts/application.js
//= require jquery
//= require jquery_ujs
//= require_self
//= require_tree .
$ cat app/assets/stylesheets/application.css
/*
*= require_self
*= require_tree .
*/

我想一切都已配置完毕。在这里我放了一些文件：

Gemfile，包含所需的资产宝石：

group :assets do
  gem 'sass-rails', '~> 3.1.3'
  gem 'coffee-rails', '~> 3.1.0'
  gem 'uglifier'
end

application.rb，已启用资源：

config.assets.enabled = true
config.assets.version = '1.0'

development.rb：

config.assets.compress = false
config.assets.debug = true

最后...... application.html.erb布局：

<%= stylesheet_link_tag 'application' %>
<%= javascript_include_tag 'application' %>

阶段

我现在处于开发环境中。

测试

如果我请求http://localhost:3000/assets/images/rails.png，它会抛出No route matches [GET] "/assets/images/rails.png"，但文件在那里：
```
$ ls app/assets/images/rails.png 
app/assets/images/rails.png
```

然后我执行rake assets:precompile：

$ bundle exec rake assets:precompile
/usr/local/rvm/rubies/ruby-1.9.2-p318/bin/ruby /usr/local/rvm/gems/ruby-1.9.2-p318/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
/usr/local/rvm/rubies/ruby-1.9.2-p318/bin/ruby /usr/local/rvm/gems/ruby-1.9.2-p318/bin/rake assets:precompile:nondigest RAILS_ENV=production RAILS_GROUPS=assets

然后，执行服务器（rails s）并再次请求图像（rails.png）：

$ rails s
=> Booting WEBrick
=> Rails 3.1.4 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
/usr/local/rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.1.4/lib/action_dispatch/http/mime_type.rb:101: warning: already initialized constant PDF
[2012-04-08 04:53:06] INFO  WEBrick 1.3.1
[2012-04-08 04:53:06] INFO  ruby 1.9.2 (2012-02-14) [i686-linux]
[2012-04-08 04:53:06] INFO  WEBrick::HTTPServer#start: pid=16702 port=3000

Started GET "/assets/images/rails.png" for 127.0.0.1 at 2012-04-08 04:53:14 -0500
Served asset /images/rails.png - 404 Not Found (38ms)

ActionController::RoutingError (No route matches [GET] "/assets/images/rails.png"):

Rendered /usr/local/rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.1.4/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (125.2ms)

所以出了什么问题？，我做错了吗？

Answer 1

据我所知，所有预编译资产都移动到assets文件夹。

这意味着javascript，样式表和图片的内容将合并到localhost:3000/assets。

所以，如果你搜索 localhost:3000/assets/images/rails.png 它应该位于 app/assets/images/images/rails.png。因此404.

要保持目录清洁，我建议您将所有图片保存在app / assets / images /中并使用asset_path('rails.png')

指向它们

Rails 3.1资产无法解决

1 个答案: