Hey everyone. I am using Appengine/Python and I haven't been able to
fix a BadKeyError bug for the last 5 hours. I'm wondering if someone
can help me figure it out. The part of the app that is causing the bug
is a controller that processes votes done by users. Actor_id is the
key of the user and object_id is the key of the object that is being
voted on.
I've been testing the app by hiding and restoring some code, and I
know for sure that the keys being received are good (first block), and
that the entities are being created (second block). What does not work
is creating an activity instance - raises BadKeyError (third block)
I've added the controller code, the model code, and the traceback of
the error from the log page.
******* Controller Code *******
# /addactivity?person=xxx&object=yyy
class ActivityHandler(FacebookEnabled):
def get(self):
# i.e. fbid / headline id / upvote. This works
actor_id = self.request.get('actor_id')
object_id = self.request.get('object_id')
action = self.request.get('action')
# creating actor and object from keys (actor_id and object_id).
This
works.
actor = models.Person.get(actor_id)
object = models.Headline.get(object_id)
logging.info("Actor " + str(actor) +": " + str(actor.name) + "
object " + str(object) + ": " + str(object.title))
# THIS IS WHAT SEEMS TO RAISE AN EXCEPTION
activity = models.Activity(actor, object, action='upvote')
activity.put()
******* Model Code *******
class Activity(polymodel.PolyModel):
# User causing the action i.e. a person
actor = db.ReferenceProperty(Person, required=True,
collection_name='actors')
# The object being the subject of the action i.e. headline
object = db.ReferenceProperty(Headline, required=True,
collection_name='objects')
# The action being made
action = db.StringProperty(required=True, choices=['upvote',
'downvote'], default='upvote')
******* Traceback *******
Name must be string type, not Headline
Traceback (most recent call last):
File "/base/python_runtime/python_lib/versions/1/google/appengine/
ext/webapp/__init__.py", line 511, in __call__
handler.get(*groups)
File "/base/data/home/apps/libnentest/2.343063076026692316/main.py",
line 125, in get
activity = models.Activity(actor, object, action='upvote')
File "/base/python_runtime/python_lib/versions/1/google/appengine/
ext/db/__init__.py", line 726, in __init__
key_name.__class__.__name__)
BadKeyError: Name must be string type, not Headline
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