On Thursday, January 27, 2011 2:52:48 AM UTC-5, tobik wrote: > > Thank you! That's what I wanted to know. > > So basically passing Keys in urls is not a good idea, but using pure > IDs and Model.get_by_id() should be secure enough. Or am I wrong? I > tried to get access to data across namespaces but it ended up with > request error. So it worked as expected. > > Yes; IDs are only unique within a namespace, entity group, and kind, so passing an ID from one namespace to an instance using a different namespace will either get you a different entity from the calling instance's namespace or nothing, never the entity in the original namespace.
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