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Transactionについて ２

/ Published in: Python
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  1. class MyModel1(db.Model):
  2.  title = StringProperty()
  3. class MyModel2(db.Model):
  4.  ref = ReferenceProperty(MyModel1)
  5.  otherRef = ReferenceProperty(OtherModel)
  6.  
  7. def method():
  8.   model1 = MyModel1.get_by_id(int(idString))
  9.   model2s = MyModel2.gql("WHERE ref = :ref", ref=model1)
  10.   db.run_in_transaction(delete_cascade, model1, model2s)
  11.  
  12. def delete_cascade(model1, model2s)
  13.  db.delete(model2s)
  14.  model1.delete()

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