That works... Thanks for the help and keep up the good work.
On Fri, Dec 11, 2009 at 12:25 PM, Michael Bayer <[email protected]>wrote:
> Pete Erickson wrote:
> >
> > class Response(Packet):
> > __tablename__ = 'responses'
> > __mapper_args__ = {'polymorphic_identity': 'response',
> > 'inherit_condition':id==Packet.id}
> >
> > id = Column(Integer, ForeignKey('packets.id'),
> > primary_key=True)
> > req_id = Column(Integer, ForeignKey('packets.id'))
> > response = Column(String)
>
> the fact that it thinks "id" takes arguments is a clue that it is
> receiving the Python built-in function "id" rather than a column
> construct. Above, the __mapper_args__ include a reference to "id" within
> the scope of "class Response", but this is before the "id" member of
> "Response" has been declared. the __mapper_args__ needs to be moved below
> the local Column objects it needs to reference.
>
>
>
>
>
>
>
>
>
>
>
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/orm/session.py", line 755, in execute
> > clause, params or {})
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/engine/base.py", line 824, in execute
> > return Connection.executors[c](self, object, multiparams, params)
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/engine/base.py", line 872, in _execute_clauseelement
> > parameters=params
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/engine/base.py", line 938, in __create_execution_context
> > return dialect.execution_ctx_cls(dialect, connection=self,
> > **kwargs)
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/engine/default.py", line 167, in __init__
> > self.compiled_parameters = [compiled.construct_params(m) for m in
> > parameters]
> > File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.6-py2.6.egg/
> > sqlalchemy/sql/compiler.py", line 243, in construct_params
> > pd[self.bind_names[bindparam]] = bindparam.value()
> > TypeError: id() takes exactly one argument (0 given)
> >
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