Appengine throwing BadRequestError: The property.name is the empty string

Question

我有一个在过去成功运行的应用程序。然而，今天，当我尝试写入数据存储时，它开始抛出错误。例如，我正在创建此模型的新实体

    class EventInstallment(ndb.Model):
        somekey = ndb.KeyProperty()
        somename = ndb.StringProperty(default = "")
        start_date = ndb.DateTimeProperty()
        notes = ndb.StringProperty("")

        moderator_approved = ndb.BooleanProperty(default = True)
        added_by = ndb.KeyProperty()

        created = ndb.DateTimeProperty(auto_now_add = True)

使用此代码

    ins = somemodel()
    ins.somename = "26-september-2016"
    ins.somekey = the_key
    ins.start_date = datetime.datetime.now()
    ins.put()

并抛出此异常。

    Traceback (most recent call last):
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/admin/__init__.py", line 363, in post
        exec(compiled_code, globals())
      File "<string>", line 8, in <module>
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/model.py", line 3451, in _put
        return self._put_async(**ctx_options).get_result()
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 383, in get_result
        self.check_success()
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 427, in _help_tasklet_along
        value = gen.throw(exc.__class__, exc, tb)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/context.py", line 824, in put
        key = yield self._put_batcher.add(entity, options)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 427, in _help_tasklet_along
        value = gen.throw(exc.__class__, exc, tb)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/context.py", line 358, in _put_tasklet
        keys = yield self._conn.async_put(options, datastore_entities)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 513, in _on_rpc_completion
        result = rpc.get_result()
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/api/apiproxy_stub_map.py", line 613, in get_result
        return self.__get_result_hook(self)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/datastore/datastore_rpc.py", line 1881, in __put_hook
        self.check_rpc_success(rpc)
      File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/datastore/datastore_rpc.py", line 1373, in check_rpc_success
        raise _ToDatastoreError(err)
    BadRequestError: The property.name is the empty string.

知道这个问题可能是什么吗？它看起来像是 GAE ndb 中的一个变化 - 因为它最近在 1 个月前工作......

Answer 1

不应该 notes = ndb.StringProperty("") 是：notes = ndb.StringProperty(default = "") ?

Appengine throwing BadRequestError: The property.name is the empty string

Appengine throwing BadRequestError: The property.name is the empty string

python

google-app-engine

app-engine-ndb

google-cloud-datastore