I would like to do a "keys_only" query for a collection property:
class User(db.Model):
name = db.StringProperty()
...etc...
class FavoriteColors(db.Model):
color = db.StringProperty()
user = db.ReferenceProperty(User,collection_name="colors")
if user.colors:
for color in user.colors(keys_only=True).order('name'):
... etc...
I know that "user.colors" is not a function and therefore "user.colors
(keys_only=True)" is not a valid approach. However, this is to
illustrate what I would like to see possible.
In other words, since "user.colors" is a Query object, shouldn't I be
able to send it the "keys_only=True" parameter when it's constructed?
There are a LOT of times when I only want those keys, so I can go grab
them from Memcache. But as soon as I try to look at them, the
Datastore fetches the entire Entity from the Datastore.
Anyone else work something around this?
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