Rails-通过资产管道加载资产

我正在尝试在较旧的Rails应用程序上设置资产管道，以便可以开始使用CoffeeScript。我正在使用ruby 1.9.3-p327和Rails 3.2.13。我曾经将所有JS，CSS和图像存放在该public/文件夹中。这是我到目前为止所做的->

1. 我将它们全部移至应用程序/资产，为JS和CSS call添加了清单文件//= require_tree .。

2. 添加了以下宝石

   group :assets do
     gem 'coffee-rails'
     gem 'uglifier'
     gem 'sass-rails'
     gem 'therubyracer'
   end
   

3. 删除了我所有的，javascript_include_tags除了= javascript_include_tag 'https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js'

4. 在我的config/application.rb文件中添加了以下内容

   # Enforce whitelist mode for mass assignment.
   # This will create an empty whitelist of attributes available for mass-assignment for all models
   # in your app. As such, your models will need to explicitly whitelist or blacklist accessible
   # parameters by using an attr_accessible or attr_protected declaration.
   config.active_record.whitelist_attributes = true
   
   # Enable the asset pipeline
   config.assets.enabled = true
   
   # Version of your assets, change this if you want to expire all your assets
   config.assets.version = '1.0'
   

5. 在config / environments / development.rb文件集内

   # Do not compress assets
   config.assets.compress = false
   
   # Expands the lines which load the assets
   config.assets.debug = true
   

6. 我添加到config / environments / production.rb

   # Compress JavaScripts and CSS
   config.assets.compress = true
   
   # Choose the compressors to use
   # config.assets.js_compressor  = :uglifier
   # config.assets.css_compressor = :yui
   
   # Don't fallback to assets pipeline if a precompiled asset is missed
   config.assets.compile = false
   
   # Generate digests for assets URLs.
   config.assets.digest = true
   
   # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
   # config.assets.precompile += %w( search.js )
   

我重新阅读了资产管道上的部分，以查看是否弄乱了任何内容。但是到目前为止，所有资产都没有从app/assets唯一起作用的资产中撤出，这是jquery.min.js我进入的资产，我include_tag尝试将其删除并再次尝试没有任何骰子。

我尝试了bundle exec rake assets:clean和bundle exec rake assets:precompile，两者都没有问题。自从为资产添加宝石以来就捆绑了，并且每次都重新启动战俘。

我不确定我是否经历了所有错误，或者我错过了一步？任何以前经历过此操作的人，都将不胜感激提示或线索。