Module: WillPaginate

Defined in:
lib/will_paginate.rb,
lib/will_paginate/finder.rb,
lib/will_paginate/version.rb,
lib/will_paginate/collection.rb,
lib/will_paginate/named_scope.rb,
lib/will_paginate/view_helpers.rb

Overview

You will paginate!

First read about WillPaginate::Finder::ClassMethods, then see WillPaginate::ViewHelpers. The magical array you’re handling in-between is WillPaginate::Collection.

Happy paginating!

Defined Under Namespace

Modules: Deprecation, Finder, NamedScope, VERSION, ViewHelpers Classes: Collection, InvalidPage, LinkRenderer

Class Method Summary collapse

Class Method Details

.enable ⇒ Object

shortcut for enable_actionpack and enable_activerecord combined



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# File 'lib/will_paginate.rb', line 13

def enable
  enable_actionpack
  enable_activerecord
end

.enable_actionpack ⇒ Object

hooks WillPaginate::ViewHelpers into ActionView::Base



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# File 'lib/will_paginate.rb', line 19

def enable_actionpack
  return if ActionView::Base.instance_methods.include_method? :will_paginate
  require 'will_paginate/view_helpers'
  ActionView::Base.send :include, ViewHelpers

  if defined?(ActionController::Base) and ActionController::Base.respond_to? :rescue_responses
    ActionController::Base.rescue_responses['WillPaginate::InvalidPage'] = :not_found
  end
end

.enable_activerecord ⇒ Object

hooks WillPaginate::Finder into ActiveRecord::Base and classes that deal with associations



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# File 'lib/will_paginate.rb', line 31

def enable_activerecord
  return if ActiveRecord::Base.respond_to? :paginate
  require 'will_paginate/finder'
  ActiveRecord::Base.send :include, Finder

  # support pagination on associations
  a = ActiveRecord::Associations
  returning([ a::AssociationCollection ]) { |classes|
    # detect http://dev.rubyonrails.org/changeset/9230
    unless a::HasManyThroughAssociation.superclass == a::HasManyAssociation
      classes << a::HasManyThroughAssociation
    end
  }.each do |klass|
    klass.send :include, Finder::ClassMethods
    klass.class_eval { alias_method_chain :method_missing, :paginate }
  end
  
  # monkeypatch Rails ticket #2189: "count breaks has_many :through"
  ActiveRecord::Base.class_eval do
    protected
    def self.construct_count_options_from_args(*args)
      result = super
      result[0] = '*' if result[0].is_a?(String) and result[0] =~ /\.\*$/
      result
    end
  end
end

.enable_named_scope(patch = true) ⇒ Object

Enable named_scope, a feature of Rails 2.1, even if you have older Rails (tested on Rails 2.0.2 and 1.2.6).

You can pass false for patch parameter to skip monkeypatching associations. Use this if you feel that named_scope broke has_many, has_many :through or has_and_belongs_to_many associations in your app. By passing false, you can still use named_scope in your models, but not through associations.



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# File 'lib/will_paginate.rb', line 67

def enable_named_scope(patch = true)
  return if defined? ActiveRecord::NamedScope
  require 'will_paginate/named_scope'
  require 'will_paginate/named_scope_patch' if patch

  ActiveRecord::Base.send :include, WillPaginate::NamedScope
end