Logging with thread identifier.rb

  class FormatterWithThread < Logger::Formatter
    Format = "%s %s, [%s#%d] %5s -- %s: %s\n"
    def call(severity, time, progname, msg)
      Format % [(Thread.current[:name] || Thread.current.object_id).to_s, 
        severity[0..0], format_datetime(time), $$, severity, progname,
        msg2str(msg)]
    end
  end

  ActiveRecord::Base.logger = Logger.new(File.join(File.dirname(__FILE__), 'debug.log'))
  ActiveRecord::Base.logger.formatter = FormatterWithThread.new