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najeira/gist:1769576

Created February 8, 2012 13:39
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Get Key trough ReferenceProperty
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gistfile1.py
from google.appengine.ext import db
class Foo(db.Model):
pass
class Bar(db.Model):
foo = db.ReferenceProperty(Foo)
Bar.foo.get_value_for_datastore(bar_obj) #=> Key of Foo
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najeira commented Feb 8, 2012

Property.get_value_for_datastore メソッドは、データストアに保存する値を取得するメソッド。
ReferencePropertyはデータストアにはKeyを保存するので、これでKeyを取得できる。

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