sure, define your mapper like this:
class User(object):
def _set_email(self, email_address):
if isValidEMail(email_address):
self._email = email
email = property(lambda self: self._email, _set_email)
m = mapper(User, users, properties = {
'_email' : users.c.email
})
- mike
Lars Heuer wrote:
> Hi all,
>
> If I like to check some constraints before the property of an object
> is really set, I have to use properties, right?
>
> I.e. I want to check if I like to accept the folling assignment:
>
> user.email = '[EMAIL PROTECTED]'
>
> I have to do something like this:
>
> class User(object):
>
> def _set_email(self, email_address):
> if isValidEMail(email_address):
> self._email = email
>
> email = property(lambda self: self._email, _set_email)
>
> Where the "User._email" property is controlled by a SQLAlchemy mapper.
>
> SQLAlchemy does not add some magic methods like SQLObject does with
> <http://sqlobject.org/SQLObject.html#overriding-column-attributes>
>
> To make it short: Is the above mentioned code the SQLAlchemy way to
> check constraints?
>
> Best regards,
> Lars
> --
> http://semagia.com
>
>
>
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