paginate_search в ferret

ferret_pagination.rb

module ActsAsFerret
  class SearchResults
    # To prevent WillPaginate warning
    attr_reader :total_pages
  end

  module ClassMethods
    def paginate_search(query, options = {}, find_options = {})
      page, per_page = wp_parse_options(options)
      offset = (page.to_i - 1) * per_page
      hits = total_hits(query)
      hits = 1 if hits == 0

      f_options = find_options.merge(:offset => offset, :limit => per_page)
      result = find_with_ferret(query, { :offset => 0, :limit => hits }, f_options)

      WillPaginate::Collection.new(page, per_page, result.total_hits).tap do |pager|
        pager.replace(result)
      end
    end
  end
end