[web2py] Duplicate record with details

[Massimiliano]

I've a doc with detail rows related.

I want to duplicate the doc and all details related.
I'm trying something like that but it doesn't work:

        doc.id = 0
        details = doc.details.select()
        doc.update_record()
        for detail in details:
            detail.id = 0
            detail.iddoc = doc.id
            detail.update_record()

What is the right way?
Thank you

-- 
Massimiliano