These methods become class methods on any controller

Methods
Public Instance methods
paginate(collection_id, options={})

Creates a before_filter which automatically paginates an Active Record model for all actions in a controller (or certain actions if specified with the :actions option).

options are the same as PaginationHelper#paginate, with the addition of:

:actions:an array of actions for which the pagination is active. Defaults to nil (i.e., every action)
     # File vendor/rails/actionpack/lib/action_controller/pagination.rb, line 143
143:       def paginate(collection_id, options={})
144:         Pagination.validate_options!(collection_id, options, false)
145:         module_eval do
146:           before_filter :create_paginators_and_retrieve_collections
147:           OPTIONS[self] ||= Hash.new
148:           OPTIONS[self][collection_id] = options
149:         end
150:       end