[This message has also been posted.]
Hi Eric,
Thanks very much for the improvement.
On Tue, 2 Dec 2008 15:04:34 -0800 (PST), Eric Ongerth
<[EMAIL PROTECTED]> wrote:
> def add_obj(session, obj):
> """ Check if object primary key exists in db. If so,exit, else
> add.
> """
> pid = obj.id
> if session.query(obj.__class__).filter_by(id=pid).count():
> print "Patient object with id %s is already in db."%pid
> exit
> else:
> session.save(obj)
> session.commit()
Yes, I was looking for this, and printed out obj.__dict__ but didn't
see it there. A dictionary of attributes is very useful in theory, but
doesn't always seem to have all attributes. Is this documented
anywhere?
> Not too difficult. You can also use type(obj) instead of
> obj.__class__.
I thought of trying this, but didn't. It didn't seem likely to work,
anyway. Is either of these preferred over the other in terms of API
stability, and if so, why?
> Furthermore, if you really need to determine the object's class's
> mapped table,
> obj_table = obj.__class__._sa_class_manager.mapper.mapped_table
>
> Of course, being an underscored thing, _sa_class_manager is not
> something you should count on from version to version of sqlalchemy,
> so keep that in consideration and don't use it anywhere you don't plan
> to maintain.
Not sure what the object class's mapped table is, but will look it up.
Regards, Faheem.
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