Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
780 views
in Technique[技术] by (71.8m points)

python - How can I get the ndb.Model when my only input is an ndb.Query?

Let's say there is ndb.Model that looks like this:

class Foo(ndb.Model):
  bar = ndb.StringProperty()

My question is, if my only input is the Foo.query() how can I get the model as an object that this query belongs to?

def query_to_model(query):
  # some magic 
  return model

The Foo.query().kind return the model's name as a string, but I didn't manage to find a way to get it as an object.

The following works using eval, but only when the model is defined in the same file:

def query_to_model(query):
  return eval(query.kind)

I want something more general than that.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
Waitting for answers

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...