Copying fieldsets

Overview

In this tutorial, you will learn to copy custom data from a quote object to an order object using the Magento/Framework/DataObject/Copy class.

Step 1: Define your attributes

The following code defines a simple extension attribute named demo for the Cart and Order objects.

extension_attributes.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Api/etc/extension_attributes.xsd">
  <extension_attributes for="Magento\Quote\Api\Data\CartInterface">
    <attribute code="demo" type="string" />
  </extension_attributes>
  <extension_attributes for="Magento\Sales\Api\Data\OrderInterface">
      <attribute code="demo" type="string" />
  </extension_attributes>
</config>

Step 2: Configure the fieldset

The following code adds the demo field to the sales_convert_quote fieldset with the to_order aspect. The code snippet in the next step uses the name of the fieldset and aspect to specify which fields to copy.

fieldset.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="DataObject/etc/fieldset.xsd">
  <scope id="global">
    <fieldset id="sales_convert_quote">
      <field name="demo">
        <aspect name="to_order" />
      </field>
    </fieldset>
  </scope>
</config>

Step 3: Copy the fieldset

The following code snippets highlight the code pieces needed to copy a fieldset using the \Magento\Framework\DataObject\Copy class.

...

/**
 * @var \Magento\Framework\DataObject\Copy
 */
protected $objectCopyService;

...

/**
 * @param \Magento\Framework\DataObject\Copy $objectCopyService
  ...
 */
public function __construct(
  \Magento\Framework\DataObject\Copy $objectCopyService,
  ...
) {
    $this->objectCopyService = $objectCopyService;
    ...
  }

...

/**
 * @param $quote \Magento\Quote\Api\Data\CartInterface
 * @param $order Magento\Sales\Api\Data\Order
 */
private function copyQuoteToOrder($quote,$order)
{
  ...
  $copy->copyFieldsetToTarget('sales_convert_quote', 'to_order', $quote, $order);
  ...
}

...

In the code, an instance of the Copy class is obtained from the constructor using dependency injection. The copyFieldsetToTarget function call with the $quote and $order parameters copies the fieldset for the two objects..