python - Get only the keys out of a reference property in GAE-Py -

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i've got app i'm storing posts , authors. straightforward each post has 1 author model.

the problem this: fetch last 10 posts using 1 call, using fetch() limit = 10. when print them out, gae uses 10 gets access author details, because author object reference property on post... classic n+1 query scenario - 1 query 10 posts , 10 queries each author.

is there way can iterate on posts collect author object keys, can load them @ 1 go using 

db.get(all_author_keys)

see response this question couple hours ago -- q identical amazing coincidence one, though different poster.

in short, this, use get_value_for_datastore of property object.


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