Checkout

Когда использовать

Build a review flow with an authoritative server quote.

Решения для реализации

1. Separate cart editing, delivery and final review.
2. Send SKU and quantity; the server owns price and inventory.
3. Keep the same idempotency key for retries of one order intent.
4. A demo quote is not an order or payment. Label simulations and never retain card data.

Как проверить результат

• Changing a client price does not affect the quote.
• Double submission cannot create duplicate orders.
• Stock conflicts have a recovery path.

Работающий пример

Файлы