class Ransack::Search

def sorts=(args)
  case args
  when Array
    args.each do |sort|
      if sort.kind_of? Hash
        sort = Nodes::Sort.new(@context).build(sort)
      else
        sort = Nodes::Sort.extract(@context, sort)
      end
      self.sorts << sort
    end
  when Hash
    args.each do |index, attrs|
      sort = Nodes::Sort.new(@context).build(attrs)
      self.sorts << sort
    end
  when String
    self.sorts = [args]
  else
    raise ArgumentError,
    "Invalid argument (#{args.class}) supplied to sorts="
  end
end