Magento2 Log – Replacement for Mage::log Method

logmagento2psr-logger

In Magento 1, if you wanted to send a message to the logs, you'd use a static method on the global Mage class.

Mage::log($message, Zend_Log::DEBUG, "my-log-file.log");

Is there an equivalent in Magento 2? I've googled through the dev docs site and haven't seen anything obvious that pops out. There's this Inchoo article, but it's from almost a year ago and so much has changed since then.

As a Magento 2 module developer, if I want to replace code like the following in Magento 1

Mage::log($message, Zend_Log::DEBUG, "my-log-file.log");

What's the bare minimum I need to do?

Best Answer

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

You use debug, exception, system for PSR Logger for example:

$this->logger->info($message);
$this->logger->debug($message);

HINT:

Don't forget to run php bin/magento setup:di:compile

Related Solutions

Cannot Write to Mage Log in Magento 1.8

Perhaps you mean to concatenate the first two arguments (. instead of ,)? In any event, your second argument is being filtered out by the Zend_Log component.

Look at the Mage::log() definition:

public static function log($message, $level = null, $file = '', $forceLog = false)
{
    //snip...
    $level  = is_null($level) ? Zend_Log::DEBUG : $level;
    //snip...
}

According to this use of Zend_Log, your second argument need to be an integer between 0 and 7; best to use the constants though:

class Zend_Log
{
    const EMERG   = 0;  // Emergency: system is unusable
    const ALERT   = 1;  // Alert: action must be taken immediately
    const CRIT    = 2;  // Critical: critical conditions
    const ERR     = 3;  // Error: error conditions
    const WARN    = 4;  // Warning: warning conditions
    const NOTICE  = 5;  // Notice: normal but significant condition
    const INFO    = 6;  // Informational: informational messages
    const DEBUG   = 7;  // Debug: debug messages
    //snip...
}

Magento Logging – Mage::log() Does Not Log in All Files Used by Magento

I would assume, the file is loaded but the method is not called. So just set a breakpoint (or bad way a die()) into your method and make sure it is called.

After magento is initialized Mage::log at least with the $force parameter writes its log

Best Answer

Related Solutions

Cannot Write to Mage Log in Magento 1.8

Magento Logging – Mage::log() Does Not Log in All Files Used by Magento

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