MultiLogger

Makes it easier to create multiple log files in Rails.

Installation

Add this line to your Rails application's Gemfile:

gem 'multi_logger'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install multi_logger

Usage

To setup a logger, create a initializer script like [Rails.root]/config/initializers/logger.rb. In the script, call MultiLogger.add_logger(log_name) to create new logger. For example, calling MultiLogger.add_logger('mail') will create a log file located at log/mail.log.

In Rails, you can access the logger by calling logger.log_name or Rails.logger.log_name. For example, calling logger.mail.debug('42') will log the message in the mail log.

Note that log_name must not collide with existing method names in Rails logger, so names such as 'debug' or 'info' can not be used. You should try calling add_logger in Rails console to test if it is ok or raises an error.

Advanced

You can assign formatter to loggers directly, or pass the formatter during setup:

class CustomFormatter
  def call(severity, time, progname, msg)
    formatted_severity = sprintf("%-5s",severity.to_s)
    formatted_time = time.strftime("%Y-%m-%d %H:%M:%S")
    "[#{formatted_severity} #{formatted_time}] #{msg.strip}\n"
  end
end
formatter = CustomFormatter.new
MultiLogger.add_logger('mail', formatter:formatter)
MultiLogger.add_logger('user', formatter:formatter)

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

License

MIT License (See LICENSE.txt)