Rails Logger appears to be duplicating log lines

Question

I am experiencing something curious with the rails logger.

When I insert a Rails.logger.info(\"Some text\") in the code, usually to trace flow, I am getting two lines of

Answer 1

Try moving the rails_12factor gem (if you've got it installed) to the production group.

group :production do
  gem 'rails_12factor'
end

Answer 2

This small workaround solved my issue. Follow these steps:

Under Rails External Libraries, Search for railties module. Go to this path: /lib/commands/server.rb

In this file comment this line, Rails.logger.extend(ActiveSupport::Logger.broadcast(console))

This command will switch off broadcasting, and just restart your rails server. You will not see any repeated logs anymore. Happy coding.

For more info checkout this issue page of rails: https://github.com/heroku/rails_stdout_logging/issues/1