Plugins & Observers

When a product is deleted, this plugin removes all corresponding quote items to prevent orphaned cart items.

public function afterDelete(
    ProductResourceModel $subject,
    ProductResourceModel $result,
    AbstractModel $product
): ProductResourceModel {
    $this->quoteItemsCleaner->execute($product);
    return $result;
}

Marks quotes containing the updated product for totals recollection on next access.

public function afterSave(
    ProductResourceModel $subject,
    ProductResourceModel $result,
    AbstractModel $product
): ProductResourceModel {
    if ($this->isProductDataChanged($product)) {
        $this->markQuotesRecollect->execute([$product->getId()]);
    }
    return $result;
}

Handles mass product actions (bulk disable, attribute updates) by marking affected quotes for recollection.

Handles post-order submission tasks including quote cleanup and order notifications.

public function execute(Observer $observer): void
{
    $quote = $observer->getEvent()->getQuote();
    $order = $observer->getEvent()->getOrder();

    // Quote is already marked inactive by QuoteManagement
    // This observer triggers additional order processing
}

Validates customer VAT number during frontend totals collection and adjusts customer group if needed.

// Triggered by: sales_quote_address_collect_totals_before
// Validates VAT for EU customers
// May change customer tax group based on VAT validation result