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require 'active_support'
# = 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!
module WillPaginate
class << self
# shortcut for <tt>enable_actionpack; enable_activerecord</tt>
def enable
enable_actionpack
enable_activerecord
end
# mixes in WillPaginate::ViewHelpers in ActionView::Base
def enable_actionpack
return if ActionView::Base.instance_methods.include? 'will_paginate'
require 'will_paginate/view_helpers'
ActionView::Base.class_eval { include ViewHelpers }
if defined?(ActionController::Base) and ActionController::Base.respond_to? :rescue_responses
ActionController::Base.rescue_responses['WillPaginate::InvalidPage'] = :not_found
end
end
# mixes in WillPaginate::Finder in ActiveRecord::Base and classes that deal
# with associations
def enable_activerecord
return if ActiveRecord::Base.respond_to? :paginate
require 'will_paginate/finder'
ActiveRecord::Base.class_eval { 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.class_eval do
include Finder::ClassMethods
alias_method_chain :method_missing, :paginate
end
end
end
# 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 <tt>named_scope</tt> broke
# has_many, has_many :through or has_and_belongs_to_many associations in
# your app. By passing +false+, you can still use <tt>named_scope</tt> in
# your models, but not through associations.
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.class_eval do
include WillPaginate::NamedScope
end
end
end
module Deprecation #:nodoc:
extend ActiveSupport::Deprecation
def self.warn(message, callstack = caller)
message = 'WillPaginate: ' + message.strip.gsub(/\s+/, ' ')
behavior.call(message, callstack) if behavior && !silenced?
end
def self.silenced?
ActiveSupport::Deprecation.silenced?
end
end
end
if defined?(Rails) and defined?(ActiveRecord) and defined?(ActionController)
WillPaginate.enable
end
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