why cannot delete attribute id of model?

[Xudong Zhang]

I want to delete the id attribute of a model but failed, it comlains that the model has no attribute 'id'. But I use hasattr() checked it and it does has the attribute.

My sample code

    product = Product.objects.get(pk=_id)
    if hasttr(product, 'id'):
        del product.id

I also tried delattr(product, 'id'), got same result.

Exception Type:	AttributeError
Exception Value:	'Product' object has no attribute 'id'

I use python 3 and django 1.8.

Anyone could help here?

[Vijay Khemlani]

I usually do 

product.id = None

product.pk = None

But I'm not sure whether that's the best way to do it

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[Tony Flury]

Why do you want to delete the id field. The idea of a primary key field is central to relational databases. If you to suppress the automatically generated primary key then you need to assign another field as the unique primary key: as far as I know that will prevent the id field being created.

[Vijay Khemlani]

At least I use it as part of the process to save a copy of an existing model instance

On Mon, Jan 11, 2016 at 9:35 AM, Tony Flury <anthon...@btinternet.com> wrote:

Why do you want to delete the id field. The idea of a primary key field is central to relational databases. If you to suppress the automatically generated primary key then you need to assign another field as the unique primary key: as far as I know that will prevent the id field being created.

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[Tony Flury]

Stating the value of either the id or pk field to None is the recommended way to rest the primary key when you take a copy of a record, but Xudong wanted to delete the field entirely: which I don't understand.