金箍棒画的圈，详解Named scope

http://www.thewebfellas.com/blog/2008/8/24/giving-composed_of-some-much-needed-lovin

named_scope尽显风采之际

不忘记给composed_of点关爱

AR内置了聚合功能，aggregate类的构建器初始化改进，新的options选项参数constructor和converter：

http://rails.lighthouseapp.com/projects/8994/tickets/892-composed_of-constructor-and-converter-options

http://locomotivation.com/2008/08/25/simplify-activerecord-aggregates-and-other-goodies-via-named_scope

唯恐世人不知有named_scope

http://blog.caboo.se/articles/2008/8/26/the-awesomest-filter-and-sort-ever

The awesomest filter and sort ever

http://github.com/metaskills/named_scope/tree/master

兼顾低版本的
Rails 1.2.6 and 2.0.4

插件pacecar

http://giantrobots.thoughtbot.com/2008/10/14/life-in-the-fast-lane

为活动记录AR的model提供named_scoped 类方法

Pacecar is a plugin for rails application which gives your ActiveRecord models a bunch of class methods based (mostly) on database introspection.

It looks at column names and types to generate named_scope methods at load time which can be used in your app and combined with other named_scopes as well.



定速車(在賽車預備圈跑道上帶頭行駛但不參加比賽)

http://github.com/yfactorial/utility_scopes/tree/master

跟pacecar类似功能的Utility scopes

provides a collection of utilitarian named scopes for use with your ActiveRecord models.

http://www.neeraj.name/blog/articles/751-under-the-hood-how-named_scope-works

揭开盖子，看工作原理
October 17, 2008