Am Freitag, 14. September 2007 23:52 schrieb jason kirtland:
> Hermann Himmelbauer wrote:
> > Hi,
> > In one of my database tables I have a varchar that is mapped to an object
> > with a string attribute. This specific varchar should however be
> > represented by a certain Python object, therefore it would be very handy,
> > if there would be a way to automatically load/represent this data. Is
> > there support from SQLAlchemy?
> >
> > I thought about writing a property for my attribute but I'm unsure if
> > this is compatible with SQLAlchemy, as SA sets up its own properties for
> > attributes when the object is mapped, so probably mine would be
> > overwritten?
>
> You could either create a custom type for the column to do translation
> to/from object form or use a property as a proxy to the varchar
> attribute.  They're both pretty easy to implement:
>
> http://www.sqlalchemy.org/docs/04/types.html#types_custom
> http://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_mapper_overri
>ding

Perfect, thanks!

Best Regards,
Hermann

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