Logging in rails

misc.rb

# Make add tags to the normal rails logger, accessed like `hc_logger.info("my log message")`
def hc_logger = @hc_logger ||= logger.tagged("HttpClients").tagged(self.class.name)

# Create a new logger as an instance variable for a class:

class MyServiceClass
  # .... 

  def my_logger = @my_logger ||= create_logger.tagged(self.class.name)

  private

  def create_logger
    logger = Logger.new(Rails.root.join('log/service_logger.log'))

    logger.formatter = proc do |severity, datetime, progname, msg|
      "[#{severity}] #{datetime}: #{msg}\n"
    end

    ActiveSupport::TaggedLogging.new(logger)
  end
 end