thanks mike! that's what i thought, but was wondering if there were a "shortcut" using identity :)

cheers,
richard.


On 08/20/2015 12:15 PM, Mike Bayer wrote:
polymorphic_identity, no. polymorphic_on, yes. work it from that end instead (e.g. using CASE).




On 8/20/15 10:05 AM, Richard Gerd Kuesters wrote:
hello!

is it possible to set the polymorphic_identity mapper param as an expression?

example:

    __mapper_args__ = {
        polymorphic_identity: in_('employee', 'recruit')
    }



thanks a lot,
richard.
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