class Ransack::Nodes::Condition

def attributes=(args)
  case args
  when Array
    args.each do |name|
      build_attribute(name)
    end
  when Hash
    args.each do |index, attrs|
      build_attribute(attrs[:name], attrs[:ransacker_args])
    end
  else
    raise ArgumentError,
      "Invalid argument (#{args.class}) supplied to attributes="
  end
end