Magento 2 Get Coupon Code Programmatically | Easy

use Magento\Quote\Model\QuoteFactory; public function getCouponCodeFromQuote(QuoteFactory $quoteFactory, $quoteId)

If you need to know which coupon affected a specific cart item (useful for per‑item discount debugging).

class GetCouponFromOrder

public function execute()

// For logged-in customers if ($this->customerSession->isLoggedIn()) $customerId = $this->customerSession->getCustomerId(); $quote = $this->quoteRepository->getActiveForCustomer($customerId); else // For guest customers $quote = $this->checkoutSession->getQuote(); magento 2 get coupon code programmatically

public function getAllCoupons(): array

public function fromOrder(int $orderId): ?string isLoggedIn()) $customerId = $this-&gt

$quote = $quoteFactory->create()->load($quoteId); return $quote->getCouponCode();