Friday 29 May 2015

Logging in magento 2 including FirePHP

Magento 2 uses Monolog library to log messages. More information about the monolog is here

You can find the Library package in the following location in Magento 2
MAGENTO2_ROOT/vendor/monolog

Log files will be created inside var/log folder.

To add logging to your class we need to add an instance of the monolog class. As magento 2 uses Dependency Injection(DI)  we need to pass the instance in the constructor of your class.

Just for testing, we are going to add this in one of the magento's default class. Go to app/code/Magento/Cms/Block/Page.php

And add the below lines After Protected $pageConfig


/**
* @var \Psr\Log\LoggerInterface
*/
protected $_logger;

And add this line \Psr\Log\LoggerInterface $logger,  as the parameter of the __construct() 

Now we need to create an object. so add these line inside the function

$this->_logger = $logger;
$this->_logger->addDebug('some text or variable');

So Finally our Constructor function will look like this.


public function __construct(
        \Magento\Framework\View\Element\Context $context,
        \Magento\Cms\Model\Page $page,
        \Magento\Cms\Model\Template\FilterProvider $filterProvider,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Cms\Model\PageFactory $pageFactory,
        \Magento\Framework\View\Page\Config $pageConfig,
        \Psr\Log\LoggerInterface $logger,
        array $data = []
    ) {
        parent::__construct($context, $data);
        // used singleton (instead factory) because there exist dependencies on \Magento\Cms\Helper\Page
        $this->_page = $page;
        $this->_filterProvider = $filterProvider;
        $this->_storeManager = $storeManager;
        $this->_pageFactory = $pageFactory;
        $this->pageConfig = $pageConfig;
        $this->_logger = $logger;
        $this->_logger->addDebug('some text or variable');
    }

TO USE FIREPHP LOGGING

Detailed Article here

Monolog has inbuilt FirePHP logging library. FirePHP is used to send log messages to the FireBug Console. More information here. Install FirePHP Firefox / Chrome addon to use this.

Now to Use FirePHP in Magento 2 just use this line
$this->_logger->pushHandler(new \Monolog\Handler\FirePHPHandler());
above
$this->_logger->addDebug('some text here');

You can see the message available on the Firebug Console panel, instead of creating a log file.

Friday 22 May 2015

Configurable Product not adding to cart

Community edition 1.9 and Enterprise edition 1.14 both have this problem. There will be a memory exhausted issue or the browser keeps loading forever.

There is a patch for this fix which is available on github.
More discussion can be found on the magento.stackexchange website.

Remove maintenance mode in magento 2

Removing Maintenance mode in Magento 2 is extremely simple as in previous Magento versions.

The .maintenance.flag file is located under var folder in Magento 2. Delete this file to remove the maintenance mode.