le 20.10.2008 20:34 Grayson Carlyle a écrit:
> I have what I think is pretty simple code, and it works up until TG
> tries to handle the transaction...
>
> I have a Servers lookup table mapped to a simple Server class. Should
> only be update-able by administrative functions, but apparently TG
> will write to the table every end of transaction.
>
> Without further ado, my test code:
>
> server = "a1"
>
> servers = model.Server()
>
here, you create a new Server object... What is this line for in tour mind ?
> serverObject =
> session.query(model.Server.name).filter(model.Server.name==server).first()
> if serverObject != None:
> return serverObject.name
> else:
> raise ServerNotFoundError("Unknown server: "+server)
>
> It works fine until TG tries to close the session... u'INSERT INTO
> `Servers` (translate, redirect) VALUES (%s, %s)' [None, None]
>
> Why is TG trying to write a new object into the database? I did not
> create any instances, and it's trying to write a non-existant object
> and fails... gee.
>
> Is there a "proper" way to check if an object exists without TG trying
> to automatically create it for me? The SQLAlchemy documents don't
> seem to give any hints in this direction.
>
> >
>
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