A simple module include that allows client side model sorting in Vienna

sorting.rb

module Vienna

  module Sorting

    module ClassMethods

      def sorted_by(field, options = {})
        @_sort_field = field
        @_sort_descending = options.fetch(:order, "asc") != 'asc'
      end

      def all
        return @_id_map.values unless @_sort_field
        @_id_map.values.sort do |a,b|
          a,b = b,a if @_sort_descending
          a[@_sort_field] <=> b[@_sort_field]
        end
      end

    end

    def self.included(base)
      base.extend ClassMethods
    end

  end

end