Can no longer pass property types to projection argument ?

[oliverchang]

In the old NDB, one could pass properties to a projection query like so:

    class Model(ndb.Model):
      a = ndb.IntegerProperty()

    for e in Model.query().fetch(projection=[Model.a]):                                                                      
      print e

This no longer works, and gives a :

TypeError: IntegerProperty('a') has type IntegerProperty, but expected one of: bytes, unicode

Is this an intentional change? A skim of the migration notes does not indicate this change.

[timlichen]

try Model.query().fetch(projection=['a']):

[oliverchang]

try Model.query().fetch(projection=['a']):

Right, the question was whether this was an intentional omission in the new library.

[timlichen]

ahh, yes, sorry missed that line.

[cguardia]

Thanks for asking. Turns out NDB is not doing anything different from the old version. This exception is actually thrown by the underlying datastore backend. Since the workaround is trivial, I expect we'll leave it as is. At least for now.

[cguardia]

@oliverchang on second thought, I guess if it worked then, it should work now, so we'll take a look at how to fix it. Thanks again and sorry for the back and forth.

[cguardia]

Fixed via #297.