i'm using sqlalchemy through turbogears

turbogears doesn't have all-that-hot support for sqlalchemy yet, and I can't stand its user visit/identity system, so i'm implementing my own (sorry Kevin)

i've come up with the following way to handle what I want to do via the cherrypy request phases

        before_request_body
                use sqlalchemy to load a session obj

        =snip

        on_end_resource
                update the session object and commit

my problem is that where i snipped things in the middle, turbogears does some stuff itself, i'm guessing there's a begin/commit or something in there... and i wind up with this error
===
File "build/bdist.darwin-8.6.0-Power_Macintosh/egg/sqlalchemy/ mapping/unitofwork.py", line 147, in _validate_obj InvalidRequestError: Detected a mapped object not present in the current thread's Identity Map: '(<class 'myapp.model.Class'>, ('62dd49990089f0c3c4e57ff54984e55ec90ffa6e',), None)'. Use objectstore.import_instance() to place deserialized instances or instances from other threads
===

would anyone have a suggestion on how i can 'check out' a unit of work and force it to persist?

I tried calling objectstore.begin() , hoping things would nest -- no luck

i tried creating explicit sessions using objectstore.Session -- also no luck

this might be impossible, i fear.  but i'm hoping for the best.




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