Adding filename to Rails logger info messages

Question

How to add the file name and line number in Rails' log message? My current format is something like

[INFO : 12-09-27 10:12:30]

I want to change it to

[INFO: 12-09-27 10:12:30 application_controller.rb:35]

or something like this. Any ideas?

Answer 1

In case any one is looking for a similar solution for Rails 4. It would be:

class ActiveSupport::Logger::SimpleFormatter
  def call(severity, time, progname, msg)
    "[#{severity} #{time} #{caller(0).first.match(/.*:\d+/)[0]}] #{msg}\n"
  end
end

Answer 2

Create an initializer logger.rb in your config/initializers directory and try putting this

class Logger::SimpleFormatter
  def call(severity, time, progname, msg)
    "[#{severity} #{time} #{caller(0).first.match(/.*:\d+/)[0]}] #{msg}\n"
  end
end

Should work on Ruby 1.9+