Can the decl. layer be used to setup a self-referential mapper like
class Foo(Base):
__tablename__ = 'foo'
__table_args__ = {'autoload' : True}
children = relation(Foo, primaryjoin=Foo.parent_id==Foo.id)
parent = relation(Foo, primary_join=Foo.parent_id=Foo.id,
remote_side=[Foo.id])
Basically using 'Foo' within the relation() does not work within the
class definition of Foo itself.
Andreas
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