Oleg Broytmann wrote:
> When the object is being created SQLObject doesn't set attributes one
> by one - it collects all name/value pairs and then issues one INSERT query.
> I.e., self._SO_set_passwd(func.PASSWORD(value)) doesn't access the SQL
> backend and hence doesn't raise an exception; the exception is raised later,
> when SQLObject really does INSERT.
> See main.py, method _SO_setValue() for details:
>
> if self.sqlmeta._creating:
> self._SO_createValues[name] = dbValue
> return
>
> (I simplified the real code a bit to stress the important points.)
>
> self._SO_set_passwd(func.PASSWORD(value)) will issue an immediate UPDATE
> on any subsequent attribute assignment and your try/except will catch it.
>
> So for your magic to work you should create an object without a password
> and then update the password:
>
> c = Credential()
> c.password = 'password'
>
> Change 'passwd' to StringCol(default=None).
>
> Oleg.
That almost did it; I also had to specifically cater for _set_passwd
receiving "None".
For the list archives, here's the method as it works for me:
def _set_passwd(self, value):
# if the database has a built-in password hashing function,
# use it. Otherwise, store a SHA256 password hash
if value is None:
self._SO_set_passwd(None)
else:
try:
self._SO_set_passwd(func.PASSWORD(value))
except OperationalError:
digest = SHA256.new(value).hexdigest()
self._SO_set_passwd(digest)
... and then initially create the instance with an empty passwd and
later update it.
Thanks again, Oleg!
Cheers,
Florian
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