On Nov 9, 2009, at 9:34 PM, Continuation wrote:
> Also does django middleware acquire database lock on my behalf, or do
> I need to explicitly perform the locking?
In the example code, it's the SELECT ... FOR UPDATE that acquires the
lock. Django doesn't currently have any explicit knowledge of
locking, so you need to drop down to the custom SQL level to issue the
right statement to acquire the lock on the row.
The example I wrote assumed you were using PostgreSQL as the backend;
you can get all sorts of details about locking in PostgreSQL here:
http://www.postgresql.org/docs/8.4/interactive/explicit-locking.html#LOCKING-ROWS
--
-- Christophe Pettus
x...@thebuild.com
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