NextRecord

Extends ActiveRecord by adding next and previous instance methods, returning the next and previous record according to a predefined order.

Add this line to your application's Gemfile:

gem 'next_record'

And then execute:

$ bundle

Or install it yourself as:

$ gem install next_record

Define an order in your model, using next_record_order. It takes the same arguments as ActiveRecord's order method:

class Person < ActiveRecord::Base
  next_record_order 'lower(trim(last_name))', :id
end

Find the previous and next records:

e = Person.first
e.next # => next record according to the defined order
e.previous # => previous record according to the defined order

• Write tests... (so far it is tested in an app it is used in)