acts_as_versioned插件问题及解决

rails上的版本控制acts_as_versioned，请安装plugin版本，gem版本会导致问题，会导致ActiveRecord找不到写入的属性的列表

报错信息如下：

NoMethodError: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.include?
/vendor/rails/activerecord/lib/active_record/dirty.rb:126:in
`write_attribute'

 

详情请看 http://groups.google.co.jp/group/rubyonrails-talk/browse_thread/thread/1e4cb2c01e346a26/f870674a3d3c1fcb#f870674a3d3c1fcb  

 

安装方法：

1. 先安装git，安装方法如下：sudo apt-get install git git-core
2. script/plugin install git://github.com/technoweenie/acts_as_versioned.git