[Fixed]-How to serialize relation

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You are doing the object creations in a wrong order, that’s why you get IntegrityError: order_order.delivery_id may not be NULL. Check your model structures again:

Your Order models has ForeignKey's to Delivery and Payments, which means that you need to create Delivery and Payments objects before Order.

Try something like this:

def create(self, validated_data):
    deliverys_data = validated_data.pop('delivery')
    delivery = Delivery.objects.create(**deliverys_data)

    paymentsMethod_data = validated_data.pop('paymentMethod')
    payment_method = Payments.objects.create(**paymentsMethod_data)

    order = Order.objects.create(
        delivery=delivery,
        paymentMethod=payment_method,
        **validated_data
    )

    return order
👤Todor

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