Hi, I am wondering what's the best practice to implement relationship constraints in sqlalchemy.
Example: Let's assume we have Account (1) <---- (n)SNMPMonitor and we want to have the following constraints: No account can have more than 10 SNMP Monitors. No account can have more than 5 SNMP Monitors if their subscription level is X No account should have more than 7 SNMP Monitors started at the same time. SNMPMonitor has methods like : start/stop/reload I am wondering where is it best to implement these constraints? I am trying to avoid having methods like start_monitor in Account so that Account can check if this action is allowed or not. Having such a method means I have to pass the monitor instance to start_monitor which will eventually do monitor.start(). I feel this is dirty because 'start_monitor' should belong to 'SNMPMonitor' as a method named 'start'. Also having a method like 'add_monitor' in Account defeats having a backref like a.monitors that allows me to do a.monitors.append(new_monitor). Suggestions? Thanks, -- 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 sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.