Hi, I read carefully the documentation at http://www.sqlalchemy.org/docs/orm/inheritance.html and I'd like to implement a similar joined table inheritance for my application.
The following example is provided : *mapper(Employee, employees, polymorphic_on=employees.c.type, polymorphic_identity='employee')* *mapper(Engineer, engineers, inherits=Employee, polymorphic_identity='engineer')* *mapper(Manager, managers, inherits=Employee, polymorphic_identity='manager')* * * However in my case I don't want to be able to persist some random Employee. All my employees should be engineers or managers. Ideally some exception should be thrown if I try to add an Employee object to my session. Of course, I'd still like to be able to persist Engineers and Managers with the right type. Is there a way to achieve that ? Thanks a lot ! Franck -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to [email protected]. 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.
