exactly what im doing. i create the keys myself.
rootkey = ndb.Key('root', 'key')
a = Asset(key=ndb.Key('Asset', 'keyname', parent=rootkey))
a._has_complete_key() # returns true
in my app i work in with entity batches and sometimes it happens that i need to
create ancestors for that entity which could already exist so till now i used
is_saved() to filter out the entities that are already saved to the datastore
to avoid putting them again (or at least trying to put them again)
On Mar 27, 2012, at 3:38 PM, Guido van Rossum wrote:
> On Tuesday, March 27, 2012 6:41:25 AM UTC-7, aschmid wrote:
> is there an equivalent of the db.Model function is_saved() with ndb.Model?
>
> No; what are you trying to do? You might be able to check whether the entity
> has a key and if so, whether that key isn't incomplete:
>
> if ent.key and ent.key.id():
> # It has a complete key.
> else:
> # Hasn't been written, ever.
>
> However this can be fooled if you explicitly set the key or the id when you
> create an entity, e.g.
>
> ent = Employee(id='joe')
>
> or
>
> ent = Employee(key=ndb.Key(Employee, 'joe'))
>
> (These two are equivalent.)
>
> --Guido van Rossum
>
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