Monolog add additional data at the end when something is logged

Question

Coming from Yii2 at the end of each request when something is logged, Yii2 adds additional data to your log, for example the $_POST data so you know what paramaters caused the issue. Is there a way to add these information in Monolog too?

I don't want to use a Processor as it includes all those parameters to each and every record. I would just like to add an additional string in case something is logged at the end of the log after all messages are included/send (for example via BufferHandler when sending Mails via SwiftMailerHandler)

Answer 1

I found a way.. I can extend the default HtmlFormatter or LineFormatter and include my custom information that way

namespace modules\myspa\monolog;

class HtmlFormatter extends \Monolog\Formatter\HtmlFormatter
{
    public function formatBatch(array $records): string
    {
        $formatBatch = parent::formatBatch($records);
        $formatBatch .= '<br><br>Foobar.. add some custom info';
        
        return $formatBatch;
    }
}

Then I can add this one as a formatter

$swiftMailHandler = new SwiftMailerHandler($swiftMailer, $message, \Monolog\Logger::ERROR);

// add my formatter
$swiftMailHandler->setFormatter(new HtmlFormatter());

$psrLogger->pushHandler(new BufferHandler($swiftMailHandler));