Christoph Haas wrote:
> Dear list,
>
> I used to use a certain ORM base class with SQLA 0.4 for a while. It
> defined __init__, __repr__ and update so that I could preset mapped
> objects with values like
>
> leo = User(name='leo', age=23)
>
> or just
>
> print leo
>
> and especially
>
> leo.update(dictionary_from_web_form)
>
> I couldn't find it on the wiki anymore. And what I use here doesn't work
> properly on 0.5 (it relies heavily on the 'c' attribute and just removing
> it doesn't solve things because it tries "if a_certain_attribute in
> this_object.c").
>
> If anyone has "ported" that few lines of code to 0.5 please let me know.
>
> I thought that the declarative_base helps here but it's just helping with
> the declaration.
>
> Cheers
> Christoph
>
I asked a similar question a long time ago and have the following based
on code proposed by Michael Bayer at the time.
class BaseExt(object):
def __repr__(self):
return "%s(%s)" % (
(self.__class__.__name__),
', '.join(["%s=%r" % (key, getattr(self, key))
for key in sorted(self.__dict__.keys())
if not key.startswith('_')]))
Base = sad.declarative_base(cls=BaseExt)
metadata = Base.metadata
class Language(Base):
__table__ = sa.Table(u'language', metadata,
sa.Column(u'langid', sa.Integer(),
sa.Sequence('gen_language_langid'), primary_key=True, nullable=False),
sa.Column(u'name', sa.String(length=50, convert_unicode=False),
nullable=False),
etc etc
item = db.Language(name='something')
print item
Werner
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