== Author Aaron Tian

== Contact Aaron2Ti@gmail.com

RecordsSequence

This plugin adds 'next/previous' methods to every ActiveRecord object. Using it you could easily find next/previous object accroding your requirements.

INSTALL

This plugin requires Rails 2.1 currently. Install easily by below command: ruby script/plugin install git://github.com/Aaron2Ti/records_sequence.git

USAGE

After installed, this plugin would mixin two methods(next and previous) to every ActiveRecord object. So it's cool to do:

class User < ActiveRecord::Base end

foo = User.first bar = foo.next foo_neighbour = foo.previous # returns nil if foo has no previous neighbour

The sequence's sorted column is defined by the new option :sorted_by,

which default is the 'id' column.

foo = User.last pre_foo_sorted_by_id = foo.previous pre_foo_sorted_by_age = foo.previous(:sorted_by => 'age')

Also works fine with most other ActiveRecord's find options:

foo = User.find 30 foo.next(:conditions => ['age < ?', 20]) foo.previous(:offset => 2) foo.next(:sorted_by => 'address', :order => 'name DESC, age') foo.previous( :sorted_by => 'age', :conditions => ['age < ?', 20], :order => 'name DESC, address', :offset => 2 )

Try Yourself!

Copyright (c) 2008 [Aaron Tian Email: Aaron2Ti@gmail.com], released under the MIT license