How to create ManyToMany object in django view?

Question

I am trying to create product api. Here I have delivery_option filed which has a manytomamy relation with my product. when I am trying to create product I am getting some error like TypeError: Direct assignment to the forward side of a many-to-many set is prohibited. Use delivery_option.set() instead. How to create the many to many field in django?

@api_view(['POST'])
@permission_classes([IsVendor])
def vendorCreateProduct(request):
    data = request.data
    user = request.user.vendor

    print(data['deliveryOption'])
    print(data['payment'])

    product = Product.objects.create (
        user=user,
        name=data['name'],
        old_price = data['price'],
        discount = data['discount'],
        image = data['avatar'],
        countInStock = data['countInStock'],
        subcategory = Subcategory.objects.get_or_create(name=data['subcategory'])[0],
        description=data['description'],
        delivery_option = data['deliveryOption'],
    )

    product.available_payment_option.set(data['payment'])
    product.save()

    serializer = ProductSerializer(product, many=False)
    return Response(serializer.data)

Answer 1

As error says :
TypeError: Direct assignment to the forward side of a many-to-many set is prohibited. Use delivery_option.set() instead
It means many-to-many field does not support direct assignment
eg. delivery_option = data['deliveryOption'].
You've to use add() or set() method to add values into your many-to-many field do like this

product = Product.objects.create(...)
product.delivery_option.add(data['deliveryOption'])