jqr-negative_named_scope

= Negative Named Scope

Tired of writing both the positive and negative versions of a named_scope? Negative Named Scope will automatically generate the NOT'd version of your named scope.

Warning: Ruby may treat !nil == true but SQL treats NOT NULL as NULL, see: http://en.wikipedia.org/wiki/Null_(SQL)

== Example

named_scope :approved, :conditions => { :approved => true }

=> named_scope :not_approved, :conditions => "NOT (approved = 't')"

named_scope :published, :conditions => { :published => true }, :negative => :unpublished

=> named_scope :unpublished, :conditions => "NOT (published = 't')"

named_scope :created_after, lambda { |value| { :conditions => ['created_after', value] } }

=> named_scope :not_created_after, lambda { |value| :conditions => ["NOT (created_after > = ?)", value] }

suppress the automatic negative named_scope generation

named_scope :great, :conditions => { :great => true }, :negative => false

== Install

As a Rails plugin:

./script/plugin install git://github.com/jqr/negative_named_scope.git

Prefer gems?

gem sources -a http://gems.github.com
gem install jqr-negative_named_scope

Homepage:: http://github.com/jqr/negative_named_scope License:: Copyright (c) 2008 Elijah Miller mailto:[e-mail], released under the MIT license