[Answered ]-Set creator automatically with DjangoRestFramework

You can combine CreateOnlyDefault and CurrentUserDefault and define creator as read_only with a default value on your Serializer:

creator = serializers.HyperlinkedRelatedField(
    read_only=True,
    default=serializers.CreateOnlyDefault(serializers.CurrentUserDefault()),
    view_name=...
)

This is my preferred way of doing this as you see directly from the Serializer definition the creator field is treated specially.