The developer can extend the existing CartltemPrices GraphQL schema to include a custom

base_price field by adding the following code to the module’s etc/schema.graphqls file:

extend type CartltemPrices { base_price: Money! @doc(description: “The base price of the cart

item”) }

This code adds a new field called base_price to the CartltemPrices type and specifies that it is of type

Money and it is not nullable. The @doc directive adds a description for the field that will be shown in

the schema documentation. The developer also needs to create a custom resolver class for the

base_price field and declare it in the di.xml file of the module. Verified Reference: [Magento 2.4

DevDocs] [Magento Stack Exchange]

The _transformAttrs class property array of the importer and exporter classes can be used to specify

a serializer class for a particular attribute. The serializer class will be used to convert the attribute

value from one format to another when the data is exported or imported.

In this case, the developer can specify a serializer class that will convert the JSON data in the

media_gallery attribute to a string. This will prevent the software that the client is using to modify

the exported data from changing the JSON data.

The following code shows how to specify a serializer class for the media_gallery attribute:

PHP

class MySerializer

{

public function serialize($value)

{

return json_encode($value);

}

public function deserialize($value)

{

return json_decode($value);

}

}

$importer->setSerializer('media_gallery', MySerializer::class);

$exporter->setSerializer('media_gallery', MySerializer::class);

Once the serializer class has been specified, the JSON data in the media_gallery attribute will be

converted to a string when the data is exported or imported. This will prevent the software that the

client is using to modify the exported data from changing the JSON data.

The plugin execution order is as follows:

PluginA::beforeDispatch()

PluginB::beforeDispatch()

PluginA::aroundDispatch()

The code in the around plugin

PluginB::afterDispatch()

PluginA::afterDispatch()

The aroundDispatch() method is executed in a separate scope, so the code in the around plugin will

be executed after the beforeDispatch() methods of both plugins, but before the afterDispatch()

methods of both plugins.

Here is a diagram that shows the plugin execution order:

PluginA

beforeDispatch()

aroundDispatch()

afterDispatch()

PluginB

beforeDispatch()

afterDispatch()

According to the Magento Stack Exchange answer, UI components are used to render various

elements on Magento admin pages, such as grids, forms, buttons, etc. UI components are defined in

XML files that are located in the view/adminhtml/ui_component directory of each module. To add a

custom logic to render a column in a grid, the developer should create a custom class extending

MagentoUiComponentListingColumnsColumn and add the custom logic within the

prepareDataSource method. This method receives an array of data sources and modifies them

according to the column logic. The developer should also add an attribute class to the column node

within the module’s customer_listing.xml file and specify their custom class name as its value.

Verified Reference: https://magento.stackexchange.com/questions/317821/how-to-add-customlogic-to-render-a-column-in-a-grid-in-magento-2

The reason why there are records remaining in the inventory_reservation table is that only

reservations no longer needed are removed by the cron job. The inventory_reservation table tracks

the quantity of each product in each order and creates a reservation for each product when an order

is placed, shipped, cancelled or refunded. The initial reservation has a negative quantity value and

the subsequent reservations have positive values. When the order is complete, the sum of all

reservations for the product is zero. The cron job removes only those reservations that have a zero

sum from the table, leaving behind any reservations that are still needed for incomplete orders.

Verified Reference: [Magento 2.4 DevDocs] [Magento Stack Exchange]

To ensure that the configuration is deployed and consistent across all environments, the developer

can use the following steps:

Create a data patch that contains the configuration for the new website.

Deploy the data patch to all environments.

Use the magento deploy:status command to verify that the configuration has been deployed to all

environments.

The developer has to add a formkey for the new export option because the formkey is required for

security reasons. Without the formkey, the request will be rejected and redirected to the dashboard

page. Verified Reference: [Magento 2.4 User Guide] [Magento 2.4 DevDocs]

To display the "file upload" field and process the actual CSV import, the following two requirements

must be met:

The developer must create a new system configuration setting that specifies the path to the CSV file.

The developer must create a new controller action that handles the file upload and import process.

The system.xml file is used to define system configuration settings. The following XML snippet shows

how to define a new system configuration setting for the CSV file path:

XML

/path/to/csv/file

The Controller\Adminhtml\ShipmentFees controller class is used to handle the file upload and

import process. The following code shows how to create a new controller action that handles the file

upload and import process:

PHP

public function uploadAction()

{

$file = $this->getRequest()->getFile('shipment_fees_csv_file');

if ($file->isUploaded()) {

$importer = new ShipmentFeesImporter();

$importer->import($file);

}

return $this->redirect('adminhtml/system_config/edit/section/shipment_fees');

}

The developer can use the plugin to trigger the consumer restart by calling the function

\Magento\Framework\MessageQueue\Consumers\TriggerRe5tartInterface:trigger(). This function

will write a flag to the cache storage that will be checked by the consumer process. If the flag is set,

the consumer process will terminate itself and restart with the updated configuration. Verified

Reference: [Magento 2.4 DevDocs] 1

The startEnvironmentEmulation() method resets the translation locale to the one of the emulated

stores, which overrides the locale the developer has set when the order of setLocale() and

startEnvironmentEmulation() is used as displayed above.

The correct way to achieve the desired result is to use the emulate() method to temporarily modify

the translation locale. The following code shows how to do this:

PHP

$this->_translate->emulate('en_US');

// Render the template

$this->_translate->revert();

This code will set the translation locale to English before rendering the template, and then revert the

locale back to the default value after the template has been rendered.

The startEnvironmentEmulation() method is used to emulate a different store view or website. This

can be useful for testing purposes, or for developing features that need to work in different

environments.

The emulate() method is used to temporarily modify the translation locale. This can be useful for

rendering templates in a specific language, or for testing features that need to work in different

languages.