gistfile1.txt

module MultiLogger
  def also_log_to file, &block
    @_original_logger, self.logger = logger, ActiveSupport::BufferedLogger.new(file)
    yield
    self.logger, @_original_logger = logger, nil
  end
end

# in application.rb:

include MultiLogger

def also_log_to_another_logger &block
  also_log_to '/tmp/another.log', &block
end
around_filter :also_log_to_another_logger