I have ORM mapped tables with a schema like the following: --- Table 'users': user_id integer username text balance integer
Table 'products': product_id integer cost integer Table 'user_products': user_id integer product_id integer --- when a user buys a product, I need to add a user_product record for them, and deduct the cost of the product from the user's balance. I need to do the latter in an atomic fashion, however (eg, "UPDATE users SET balance = balance - ? WHERE user_id = ?") in the same transaction as the ORM changes to create the user_products record. Ideally, I need to update the relevant User object with the updated balance, too. Can anyone provide me with a quick overview of how to do this? Thanks, Nick Johnson --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
