E-commerce Platforms

How to change block's template with alias in Magento2 extension

as we know that some blocks does have alias without name in the xml files, so here we will see how we can change the template for a block with alias instead of name

I will put here an example on how to do it , this was tested in Magento 2.3.4

in the parent module we have this XML 

It's very recommanded to delete unused carts after you finish the upgrade using these queries all customers carts that are not converted to order will be deleted 

select * 
FROM `quote_address`
WHERE `customer_address_id` IS NULL AND `firstname` IS NULL AND `lastname` IS NULL and quote_id in (SELECT entity_id FROM `quote` where is_active= 1)

select *    from quote where entity_id not in (select quote_id from quote_address)

Error : Notice: Undefined offset: 2 in vendor\magento\framework \Encryption\Encryptor.php

Some time you will have the below error after you move Magento2 from server to another server with different PHP version or even with the same PHP version , now what is the first solution we can do 

mostly this library will be missed 

php-sodium

So we need to install it , below is some command we can do to install it on Centos

Most programmer need to change sometime the password of one customer programmatically, in this wiki I will give you a code to change the password programmatically

ln -s /real/path/to/media /path/where/you/want/symlink/media

I have looked at almost 100 articles to know how Magento format the URL without any success and finally I found it and it was really so easy , here is the quick way to see it using object manager

Note: please consider to use the dependency injection

$_productloader = $objectManager->get('\Magento\Catalog\Model\ProductFactory');
$product =  $_productloader->create()->load(1);


echo  $product->formatUrlKey({Your text here});

in this way Magento will give you the correct URL which will be used 

How do you add translation for extensions in Magento2?

Then generate the dictionary with magento shell tool; from :

php bin/magento i18n:collect-phrases -o app/code/{Vendor}/{Module}/i18n/en_US.csv app/code/{Vendor}/{Module}/

do not forget to replace {Vendor} and {Module} with your correct information 

the easy way is to go to this file 

\vendor\magento\framework\Event\Manager.php

then go to this function dispatch

you can now user this 

foreach ($this->_eventConfig->getObservers($eventName) as $observerConfig) {
    if ($eventName == "catalog_product_save_after") {
         $all_observers = print_r($observerConfig, true);
    }
}