How does \Magento\Downloadable\Ui\DataProvider\Product\Form\Modifier\Composite work?

dmitrii_fediuk · February 22, 2016, 10:35am

Preliminary reading: How does a backend product form define the data to be passed to its UI component on the client (JavaScript) side?

Declaration

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L18-L18


class Composite extends AbstractModifier

Usage

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/etc/adminhtml/di.xml#L22-L25


<item name="downloadable" xsi:type="array">
    <item name="class" xsi:type="string">Magento\Downloadable\Ui\DataProvider\Product\Form\Modifier\Composite</item>
    <item name="sortOrder" xsi:type="number">20</item>
</item>

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Catalog/Ui/DataProvider/Product/Form/ProductDataProvider.php#L49-L57


public function getData()
{
    /** @var ModifierInterface $modifier */
    foreach ($this->pool->getModifiersInstances() as $modifier) {
        $this->data = $modifier->modifyData($this->data);
    }


    return $this->data;
}

Implementation

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L63-L72


public function modifyData(array $data)
{
    if ($this->canShowDownloadablePanel()) {
        foreach ($this->getModifiers() as $modifier) {
            $data = $modifier->modifyData($data);
        }
    }


    return $data;
}

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L88-L102


/**
 * Check that can show downloadable panel
 *
 * @return bool
 */
protected function canShowDownloadablePanel()
{
    $productTypes = [
        DownloadableType::TYPE_DOWNLOADABLE,
        CatalogType::TYPE_SIMPLE,
        CatalogType::TYPE_VIRTUAL
    ];


    return in_array($this->locator->getProduct()->getTypeId(), $productTypes);
}

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L104-L118


/**
 * Get modifiers list
 *
 * @return ModifierInterface[]
 */
protected function getModifiers()
{
    if (empty($this->modifiersInstances)) {
        foreach ($this->modifiers as $modifierClass) {
            $this->modifiersInstances[$modifierClass] = $this->modifierFactory->create($modifierClass);
        }
    }


    return $this->modifiersInstances;
}

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L30-L33


/**
 * @var array
 */
protected $modifiers = [];

https://github.com/magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L48-L48

https://github.com/magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L53-L53

github.com

magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/Ui/DataProvider/Product/Form/Modifier/Composite.php#L57-L57


$this->modifiers = $modifiers;

https://github.com/magento/magento2/blob/e0ed4bad/app/code/Magento/Downloadable/etc/adminhtml/di.xml#L29-L38

dmitrii_fediuk · February 22, 2016, 11:01am