Wednesday, 3 June 2015

Get system config values in magento 2

How to get data from Magento 2 System Configuration ? Here's how to.

We need to call the default method available.

Just Use \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
In your constructor argument and create an Object $this->scopeConfig = $scopeConfig;

Now to Get the configuration value just use
$this->_scopeConfig->getValue('dev/debug/template_hints', \Magento\Store\Model\ScopeInterface::SCOPE_STORE);

First argument is the value which we need from system configuration and the Second argument is the Store scope.

Demo

public function __construct(
\Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
) {
$this->_scopeConfig = $scopeConfig;
}


public function helloWorld(){

   $showTemplateHint =  $this->_scopeConfig->getValue('dev/debug/template_hints', \Magento\Store\Model\ScopeInterface::SCOPE_STORE);

}

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

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.

Thursday, 22 January 2015

Set / Change Meta title and description in Magento 2


SET PAGE META VIA BLOCK


You need to place this code inside your _prepareLayout() function in your Block file. Below is the complete function.

public function _prepareLayout()
{

   //set page Meta's
   $this->pageConfig->setKeywords('Hello Metakeyword');
   $this->pageConfig->setDescription('Hello Metadescription');

   return parent::_prepareLayout();

} 

SET PAGE META VIA LAYOUT XML

Open your xml file inside your layout folder and place this code above the body tag.

<head>
    <meta name="description" content="XML Hello metadesc"/>
    <meta name="keywords" content="XML Hello keywords"/>

</head>

NOTE:  When you try to add title via both the methods first preference will be given to the block method(php file).

Sunday, 18 January 2015

Set page title on Magento 2

I was working on creating a simple Hello world module in Magento 2. Tutorials from other websites, there was only instructions to create the module and then I found the page title was empty.

I did a little search in the core files and found the code to set page title.

SET PAGE TITLE VIA BLOCK

$this->pageConfig->getTitle()->set(__('Hello World'));

You need to place this code inside your _prepareLayout() function in your Block file. Below is the complete function.

public function _prepareLayout()
{

   //set page title
   $this->pageConfig->getTitle()->set(__('Hello Index Test'));

   return parent::_prepareLayout();

} 

SET PAGE TITLE VIA LAYOUT XML

Open your xml file inside your layout folder and place this code above the body tag.

<head>
    <title>SAMPLE TITLE</title>

</head>

NOTE:  When you try to add title via both the methods first preference will be given to the block method(php file).

Monday, 12 January 2015

Set/Enable developer mode in Magento 2

Magento 2 is already out for developers for testing and contributing improvements. After installing magento 2, you need to enable the Developer mode to show the errors on browser. Else, the errors will be logged into a separate file under var/report.

There are multiple ways to enable a developer mode
Via Console
Run the following command "php bin\magento deploy:mode:developer"

Edit env.php
'MAGE_MODE' => 'developer'  add this line on your env.php file below 'x-frame-options'

OR
Just add this below line on your index.php file
$_SERVER['MAGE_MODE'] = 'developer';

Place the code above on line 1. Above all the codes which was there already.