On Mon, Dec 20, 2010 at 4:49 PM, Marc Aymerich <glicer...@gmail.com> wrote: > > > On Mon, Dec 20, 2010 at 8:29 PM, morgan wahl <morgy.w...@gmail.com> wrote: >> >> Hello all, >> >> I was wonder if there is a way to turn a model instance into an >> instance of a subclass of it's class. E.g.: >> >> class Document(models.Model): >> doctype = models.CharField(max_length=256, blank=True, null=True) >> >> class UploadedFile(Document): >> filename = models.CharField(max_length=256) >> >> Given a Document that isn't already an UploadedFile, can I turn it >> into one? I know at the database level it's just a matter of inserting >> a new row into the uploadedfile table with document_ptr_id = the >> Document's id. I've tried >> > > I think that something like this should do the work: > Document.UploadFile.filename="rat.doc" > Document.save() > > -- > Marc Um, I'm not sure what it is you're trying to demonstrate here... in my example bits of code Document and UploadedFile are Model classes, not instances.
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