保存 ndb LocalStructured 实体时出现 App Engine BadValueError [英] App Engine BadValueError when saving ndb LocalStructured entity

问题描述

我有模型

class Foo(ndb.Model):
  x = ndb.IntegerProperty()

class Bar(ndb.Model):
  foo = ndb.StructuredProperty(Foo, repeated=True)

我最近一直在尝试保存 Bar 实体时，仅在生产中出现此错误:

I keep getting lately, when trying to save Bar entities, only in production, this error:

BadValueError: Expected Foo instance, got Foo(x=100)

我记得不久前看到过这个错误，然后它就消失了.这是什么原因?

I remember seeing this error a while ago, and then it dissapeared. What's the reason for this?

推荐答案

问题是我在保存模型的文件中对 models.py 使用了相对导入，所以不知何故 python 认为 Foo 与 Foo 不同，因为它们在不同的包中.我将模型导入更改为绝对导入，现在工作正常.

The problem was I was using relative imports for models.py in the file where I was saving the model, so somehow python thought Foo to be different than Foo because they are in different packages. I changed the models import to be an absolute import, and now it's working fine.

这篇关于保存 ndb LocalStructured 实体时出现 App Engine BadValueError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！