Генератор документов - изменить список товаров (версия 2)

$templateId = 2;
$value = 1;

\Bitrix\Main\Loader::includeModule('crm');
\Bitrix\Main\Loader::includeModule('documentgenerator');

/**
 * Returns true if this product should not be added to the document
 *
 * @param \Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Product $product
 * @return bool
 */
function isSkipProduct(\Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Product $product)
{
    return true;
    $typePropertyId = 500;
    $restrictedType = 100;
    return $product->getValue('PROPERTY_'.$typePropertyId) === $restrictedType;
}

/**
 * @param \Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Product $product
 * @return \Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Product
 */
function modifyProduct(\Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Product $product)
{
    $reflection = new ReflectionObject($product);
    $data = $reflection->getProperty('data');
    $data->setAccessible(true);
    $dataValue = $data->getValue($product);
    $dataValue['NAME'] = 'Test Name';
    $data->setValue($product, $dataValue);

    return $product;
}

function modifyProducts(\Bitrix\DocumentGenerator\DataProvider\ArrayDataProvider $productsProvider, array $products)
{
    $reflection = new ReflectionObject($productsProvider);
    $data = $reflection->getProperty('data');
    $data->setAccessible(true);
    $data->setValue($productsProvider, $products);
}

$template = \Bitrix\DocumentGenerator\Template::loadById($templateId);
if(!$template)
{
    die('template not found');
}

$template->setSourceType(\Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Deal::class);

$document = \Bitrix\DocumentGenerator\Document::createByTemplate($template, $value);
if(!$document)
{
    die('could not create document');
}

\Bitrix\Main\EventManager::getInstance()->addEventHandler(
    \Bitrix\DocumentGenerator\Driver::MODULE_ID,
    'onBeforeProcessDocument',
    function(\Bitrix\Main\Event $event)
    {
        $productsPlaceholder = 'PRODUCTS';

        /** @var \Bitrix\DocumentGenerator\Document $document */
        $document = $event->getParameter('document');
        $provider = $document->getProvider();

        $productsProvider = \Bitrix\DocumentGenerator\DataProviderManager::getInstance()->getDataProviderValue($provider, $productsPlaceholder);
        if($productsProvider instanceof \Bitrix\DocumentGenerator\DataProvider\ArrayDataProvider)
        {
            $products = [];
            foreach($productsProvider as $product)
            {
                if(!isSkipProduct($product))
                {
                    $products[] = modifyProduct($product);
                }
            }

            modifyProducts($productsProvider, $products);

            $productsFieldDescription = $provider->getFields()[$productsPlaceholder];

            $document->setValues([$productsPlaceholder => $products]);
            $document->setFields([$productsPlaceholder => $productsFieldDescription]);
        }
    }
);

$result = $document->getFile();

if($result->isSuccess())
{
    print_r($result->getData());
}
else
{
    print_r($result->getErrorMessages());
}