Hi Andy! I'm not sure, but doesn't the parent argument in this line
# parent is a db.Key so why does the next line fail? b1 = B(key_name='andy', parent=parent) has to be an actual entity rather than a key value? The error message seems to suggest so. So you should probably able to achieve what you want by using: b1 = B(key_name='andy', parent=db.get(parent)) Best Regards, Jesaja Everling 2008/11/16 Andy Freeman <[EMAIL PROTECTED]>: > > In http://code.google.com/appengine/docs/datastore/keysandentitygroups.html > > "You can create an entity with an ancestor path without first creating > the parent entity. To do so, you create a Key for the ancestor using a > kind and key name, then use it as the parent of the new entity. All > entities with the same root ancestor belong to the same entity group, > whether or not the root of the path represents an actual entity." > > From the Model discussion in > http://code.google.com/appengine/docs/datastore/modelclass.html > > "parent > The Model instance or Key instance for the entity that is the new > entity's parent." > > > class A(db.Model): > pass > > class B(db.Model): > pass > > parent = db.Key.from_path('A', 'hh') > > # parent is a db.Key so why does the next line fail? > b1 = B(key_name='andy', parent=parent) > > C:\Program Files\Google\google_appengine_1.1.5\google\appengine\ext\db > \__init__.py in __init__(self=<schema.B object at 0x01AB5970>, > parent=datastore_types.Key.from_path('A', u'hh', _app=u'imagestew'), > key_name='andy', _app=None, **kwds={}) > > type 'exceptions.TypeError'>: Expected Model type; received > aglpbWFnZXN0ZXdyCQsSAUEiAmhoDA (is Key) > args = ('Expected Model type; received > aglpbWFnZXN0ZXdyCQsSAUEiAmhoDA (is Key)',) > message = 'Expected Model type; received > aglpbWFnZXN0ZXdyCQsSAUEiAmhoDA (is Key)' > > > > > > -- o L_/ OL This is Schäuble. Copy Schäuble into your signature to help him on his way to Überwachungsstaat. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
