How to add log in Magento2 for debug?

In Magento 2, you can use the built-in logging system to add logs for debugging purposes. Here’s a step-by-step guide on how to add log in Magento2:

Initialize the Logger in your class

To start logging, you need to instantiate the \Psr\Log\LoggerInterface in your class. You can do this by adding it to the constructor.

protected $logger;

public function __construct(
    \Psr\Log\LoggerInterface $logger
) {
    $this->logger = $logger;
    parent::__construct();
}

Add Log Statements

Now, you can use the $this->logger object to add log statements. There are different log levels available, such as debug, info, notice, warning, error, critical, and alert. Choose the appropriate level based on the severity of the message.

$this->logger->debug('Debug message');
$this->logger->info('Info message');
$this->logger->error('Error message');

Viewing Logs

Magento 2 logs are typically stored in the var/log directory. You can find logs for different areas and modules in this directory. View logs using tools like tail or read the log files directly.

tail -f var/log/system.log

I hope this blog is useful to add log in Magento2. In case, I missed anything or need to add some more information, Don’t heisted to leave a comment in this blog, I’ll get back with some positive approach.

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