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问题出现：

I am trying to use caches_action and the agile book says that it is keyed

off the URL, however it does not seem to pick up the URL parameters.

http://localhost:3000/controller/action/id?foo=bar

and

http://localhost:3000/controller/action/id?foo=foobar

Returns the same page.

问题原因：

Rails Caching不能Cache Parameter，所以caches_action时会出现上述原因。 

解决方法：

1. 修改rails routes.rb，将原来的”?parameters=”的调用方式更改为/action/:parameters的访问方式，以使用rails cache不同的fragment

2. 安装一个rails-caching的plugin，然后修改environment.rb中增加cache key for action : Action Cache Update Plugin

参考资料：

http://wiki.rubyonrails.org/rails/pages/Action+Cache+Update+Plugin

http://blog.craz8.com/articles/2005/12/26/rails-action-cache-upgrade 

http://scottstuff.net/presentations/rails-caching/

http://lists.rubyonrails.org/pipermail/rails/2006-February/017726.html

标签： Technologies