ruby-on-rails-3.1 - Rails 3.1 Assets 无法解析

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" 的说明将其升级到 3.1.4 .

现在我遇到了 的问题 Assets 因为他们未解决 ，在服务器日志中给出消息，如下所示:

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

并包含这个:

$ 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。我在这里放了一些文件块:

Gemfile ，包含所需的 Assets gem :

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

application.rb , 已启用 Assets :

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

development.rb :

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

终于... application.html.erb布局:

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

舞台

我现在在 发展 环境。

测试

如果我要求 http://localhost:3000/assets/images/rails.png ，它抛出 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 怎么了？ ， 难道我做错了什么？

Answer 1

据我所知，所有预编译 Assets 都移动到 Assets 文件夹中。

这意味着 javascript、样式表和图像的内容将合并在 localhost:3000/assets 中。 .

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。

为了保持目录干净，我建议将所有图片保存在 app/assets/images/中，并使用 asset_path('rails.png') 指向它们。