Module WillPaginate::NamedScope
In: lib/will_paginate/named_scope.rb
ArgumentError InvalidPage Array Collection LinkRenderer Scope lib/will_paginate/collection.rb lib/will_paginate/view_helpers.rb Deprecation ViewHelpers VERSION ClassMethods Finder lib/will_paginate/named_scope.rb ClassMethods NamedScope WillPaginate dot/m_8_0.png

This is a feature backported from Rails 2.1 because of its usefullness not only with will_paginate, but in other aspects when managing complex conditions that you want to be reusable.

Methods

included  

Classes and Modules

Module WillPaginate::NamedScope::ClassMethods
Class WillPaginate::NamedScope::Scope

Public Class methods

included(base)

All subclasses of ActiveRecord::Base have two named_scopes:

  • all, which is similar to a find(:all) query, and
  • scoped, which allows for the creation of anonymous scopes, on the fly: Shirt.scoped(:conditions => {:color => ‘red’}).scoped(:include => :washing_instructions)

These anonymous scopes tend to be useful when procedurally generating complex queries, where passing intermediate values (scopes) around as first-class objects is convenient.

[Source]

    # File lib/will_paginate/named_scope.rb, line 11
11:     def self.included(base)
12:       base.class_eval do
13:         extend ClassMethods
14:         named_scope :scoped, lambda { |scope| scope }
15:       end
16:     end

[Validate]