How do I log messages to a file using the Ruby logging gem?

How do I log messages to a file using the Ruby logging gem?

To log messages to a file using the Ruby logging gem, you first need to install the gem. You can do this by adding gem 'logging' to your Gemfile and running bundle install.

What is the basic setup for logging to a file?

After installing the gem, you can set up logging to a file like this:

require 'logging'

Logging.logger.root.appenders = Logging.appenders.file('logfile.log')
Logging.logger.root.level = :info

How can I log different levels of messages?

You can log different levels of messages by using methods like info, warn, error, etc. For example:

logger = Logging.logger['MyLogger']
logger.info('This is an info message')
logger.error('This is an error message')

Can I customize the log format?

Yes, you can customize the log format by setting a formatter. For example:

appender = Logging.appenders.file('logfile.log', formatter: Logging::Formatters::Basic.new)