Thanks for the code, your example runs without a problem. I've managed to "locate" the error. In reality it doesn't have to do with InstrumentedList. The problem occurs when beaker pickle.load()s from its cache file (a pickled object in a file). I get the following exception (which makes beaker stop loading the session): AttributeError: 'User' object has no attribute '_sa_instance_state'
If I try to load the file directly I get the same result. I've been trying to google such error but all I get the reference to is that orm.mapper() should be run in the thread or process that is loading the pickled object. I tried loading "manually" (in a python console) my mappers and the trying to unpickle the object without success. I cannot (at the moment) include a code example because it is a medium sized pylons project. I know that this was working with version 0.6, with orm.synonym; the main difference is that now I use @hybrid_property and version 0.7.4. I will try to make a small project and try to reproduce the error, but if you have any idea of why is doing this I will appreciate it if you can lead me to a possible solution. Thanks. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sqlalchemy/-/Em-Xaxb5QFUJ. 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.
