Become a Rails Logger Pro: Replicating Rails Logger with Pure Ruby

What?

In Ruby on Rails, the logger is a built-in utility that provides a standardized way to log messages during application runtime. It is an instance of the Logger class, which is part of Ruby's standard library. The Rails logger is accessible throughout your application and allows you to record various events and information.

The logger is primarily used for debugging, monitoring application behavior, and tracking errors. By default, the logger outputs log messages to the standard output (STDOUT), but you can configure it to write to files or other destinations.

It provides different log levels to categorize the severity of the logged messages such as,

• debug: For detailed debugging information.
• info: For general information messages.
• warn: For warning messages.
• error: For error messages.
• fatal: For critical errors that might cause the application to crash.

Here’s an example of using the Rails logger:

# Log an information message
logger.info("This is an information message.")

# Log a warning message
logger.warn("This is a warning message.")

# Log an error message
logger.error("This is an error…