Module: ActiveRecord::Acts::Comparable

Defined in:: lib/acts_as_comparable/acts_as_comparable.rb

Overview

acts_as_comparable

acts_as_comparable provides comparison to ActiveRecord models. It allows you to capture what fields are different, as well as easy access to those diferrent values.

class MyModel < ActiveRecord::Base
acts_as_comparable
end

EXAMPLES

# default options which treats all fields as comparable
class Person < ActiveRecord::Base
acts_as_comparable
end

# specifying which fields that should act as comparable
class Person < ActiveRecord::Base
  acts_as_comparable :only => [ :first_name, :last_name, :age ]
end

# specifying which fields shouldn't act as comparable
class Person < ActiveRecord::Base
  acts_as_comparable :except => [ :eyecolor ]
end

# specifying fields which compare to another field on the same model
class Account < ActiveRecord::Base
  acts_as_comparable :attrs_map => { :accountno => :parent_accountno }
end

See unit tests for more usage examples.

AUTHORS

Mark Van Holstyn www.lotswholetime.com
Zach Dennis www.continuousthinking.com

Defined Under Namespace

Modules: ClassMethods, InstanceMethods

Class Method Summary collapse

.included(base) ⇒ Object

Class Method Details

.included(base) ⇒ `Object`



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# File 'lib/acts_as_comparable/acts_as_comparable.rb', line 42

def self.included( base )
  base.extend ClassMethods
end