I have a setup like this:
class Entity(object): pass
class Persoon(Entity): pass
entity_tabel = Table('contact', metadata,
Column('contactid', Integer, primary_key=True),
Column('voornaam', String(75)),
Column('naam', String(75)),
Column('organisatietypeid', Integer))
entity_mapper = mapper(self.Entity, entity_tabel,
polymorphic_on=entity_tabel.c.organisatietypeid,
polymorphic_identity=None)
persoon_mapper = mapper(self.Persoon,
inherits=entity_mapper,
polymorphic_identity=None,
properties={
'achternaam':entity_tabel.c.naam})
Now, I want to add a 'Persoon':
p = Persoon()
p.voornaam = 'firstname'
p.achternaam = 'surname'
mySession.add(p)
mySession.commit()
But this leaves my 'naam' field to 'NULL'. Only if I do:
p = Persoon()
p.voornaam = 'firstname'
p.naam = 'surname'
mySession.add(p)
mySession.commit()
Things work as they should.
How is this possible? I thought that by saying:
properties={'achternaam':entity_tabel.c.naam}
you actually rename the column, but it seems it creates another
attribute which would lead to unexpected results in my case.
Anybody more info about this?
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