til/rails/check-the-current-named-log-level.md

Check The Current Named Log Level

I'm connected to a rails console session for an active Rails app. I want to check the current log level.

> Rails.logger.level
=> 1

The 1 doesn't mean much to me at a glance. I can translate that to the severity level using the Logger::SEV_LABLE constant.

[44] pry(main)> Logger::SEV_LABEL[Rails.logger.level]
=> "INFO"

Ah yes, INFO, that makes sense as the default.

I can see all the severity levels by inspecting the constant itself.

[45] pry(main)> Logger::SEV_LABEL
=> ["DEBUG", "INFO", "WARN", "ERROR", "FATAL", "ANY"]

As I convenience, I can set the label using the index, the string, or even a symbol.

> Rails.logger.level
=> 1
> Rails.logger.level = "WARN"
=> "WARN"
> Rails.logger.level
=> 2
> Rails.logger.level = :debug
=> :debug
> Rails.logger.level
=> 0

See the Debugging Rails Applications guide for more details.