On 31 juil, 00:48, Jonathon Anderson <[EMAIL PROTECTED]> wrote:
> With sqlalchemy, I find myself always spelling:
>
> instance = Entity.get(instance_id)
> if not instance:
> print "no record of an instance with id %s" % instance_id
> else:
> print instance
There's a load() method, and selectone() (depending on your needs)
which try to load an object and raise an exception if it cannot find a
result.
Here is an example (using a Session object) :
try:
session.query(Entity).load(instance_id)
# OR session.query(Entity).selectone(entity.c.id == instance_id)
except InvalidRequestError:
print "no record of an instance with id %s" % instance_id
Hope it helps,
- Jonathan
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To post to this group, send email to sqlalchemy@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/sqlalchemy?hl=en
-~----------~----~----~----~------~----~------~--~---
