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DataObjectFactory

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Description

The DataObject class plays an integral role in Magento as the data container for CRUD operations. Likewise, there are circumstances where you need to interact with data injected via di.xml, but don’t want to introduce tighter coupling caused by extending the DataObject class. This is where a DataObjectFactory can come in handy. It provides a compositional approach to interacting with injected data.

In the usage example below, we have a $container property that will store our injected data in a DataObject. By using this approach, you not only have looser coupling, but you can control access to the data with the appropriate visibility settings for $container and getContainer.

Usage

<?php
/**
 * Geography.php
 */
declare(strict_types=1);

namespace Vendor\Package\Model;

use Magento\Framework\{
    DataObject,
    DataObject\Factory as DataObjectFactory
};

class Geography
{
    /** @property DataObject $container */
    protected $container;

    /**
     * @param DataObjectFactory $dataObjectFactory
     * @param array $data
     * @return void
     */
    public function __construct(
        DataObjectFactory $dataObjectFactory,
        array $data = []
    ) {
        $this->container = $dataObjectFactory->create($data);
    }

    /**
     * @return DataObject|null
     */
    protected function getContainer(): ?DataObject
    {
        return $this->container;
    }

    /**
     * @return array
     */
    public function getCountries(): array
    {
        return $this->getContainer()->getData('countries') ?? [];
    }

    /**
     * @return array
     */
    public function getCities(): array
    {
        return $this->getContainer()->getData('cities') ?? [];
    }
}
<?xml version="1.0"?>
<!--
/**
 * di.xml
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Vendor\Package\Model\Geography">
        <arguments>
            <argument name="data" xsi:type="array">
                <item name="countries" xsi:type="array">
                    <item name="us" xsi:type="string">US</item>
                    <item name="england" xsi:type="string">England</item>
                    <item name="france" xsi:type="string">France</item>
                    <item name="italy" xsi:type="string">Italy</item>
                </item>
                <item name="cities" xsi:type="array">
                    <item name="new_york" xsi:type="string">New York</item>
                    <item name="london" xsi:type="string">London</item>
                    <item name="paris" xsi:type="string">Paris</item>
                    <item name="rome" xsi:type="string">Rome</item>
                </item>
            </argument>
        </arguments>
    </type>
</config>