对象没有属性_Message__decoded_fields

我有两个型号：对象没有属性_Message__decoded_fields

class Location(EndpointsModel): 
    geoLocation = ndb.GeoPtProperty() 
    street = ndb.StringProperty() 
    city = ndb.StringProperty() 
    state = ndb.StringProperty() 

class UserPost(EndpointsModel): 
    _message_fields_schema = ("entityKey", "title", "description", "category", "date", "time", "status", "locationOne") 
    category = ndb.IntegerProperty(indexed=True,validator=checkIfValidCategory) 
    title = ndb.StringProperty() 
    description = ndb.TextProperty() 
    date = ndb.DateProperty(indexed=True,auto_now_add=True) 
    time = ndb.IntegerProperty(indexed=True) 
    status = ndb.IntegerProperty(indexed=True,validator=checkIfValidStatusType) 
    locationOne = ndb.StructuredProperty(Location,indexed=False)

我对UserPost尝试通过以下方法插入：

@UserPost.method(name='userPost.insert', path='userPost/insert', http_method='POST') 
def userPost_insert(self,r): 
    """ insert userPost """ 
    user = Auth.get_current_user(verified_email_required=True) 
    if user is None: 
     raise endpoints.UnauthorizedException('You must have a verified account before you can post') 
    if r.title is None: 
     raise endpoints.BadRequestException('Missing title') 
    i_post = r 
    i_post.put() 
    return i_post

这是来自客户端的JSON：

{ 
    "title":"asdf", 
    "details":"asdf", 
    "locationOne":{ 
     "state":"test", 
     "geoLocation":{ 
      "lon":0.127592, 
      "lat":51.503407051 
     }, 
     "city":"test", 
     "street":"test" 
    } 
}

它工作，如果我拿出locationOne但是当我尝试插入的位置，我得到一个e RROR。这里是我的堆栈跟踪：

INFO  2016-03-25 17:08:52,389 module.py:787] default: "POST /_ah/spi/Auth.CurrentUser HTTP/1.1" 200 207 
INFO  2016-03-25 17:08:52,389 module.py:787] default: "GET /_ah/api/auth/v1.0/current_user HTTP/1.1" 200 224 
INFO  2016-03-25 17:09:01,631 module.py:787] default: "POST /_ah/spi/BackendService.getApiConfigs HTTP/1.1" 200 95185 
ERROR 2016-03-25 17:09:01,644 service.py:191] Encountered unexpected error from ProtoRPC method implementation: AttributeError ('Location' object has no attribute '_Message__decoded_fields') 
Traceback (most recent call last): 
    File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/protorpc-1.0/protorpc/wsgi/service.py", line 181, in protorpc_service_app 
    response = method(instance, request) 
    File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/endpoints-1.0/endpoints/api_config.py", line 1331, in invoke_remote 
    return remote_method(service_instance, request) 
    File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/protorpc-1.0/protorpc/remote.py", line 414, in invoke_remote_method 
    response = method(service_instance, request) 
    File "/Users/buddydelaune/Dev/Apps/noble-py-proto/endpoints_proto_datastore/ndb/model.py", line 1408, in EntityToRequestMethod 
    request = cls.FromMessage(request) 
    File "/Users/buddydelaune/Dev/Apps/noble-py-proto/endpoints_proto_datastore/ndb/model.py", line 1232, in FromMessage 
    to_add = FromValue(value_property, value) 
    File "/Users/buddydelaune/Dev/Apps/noble-py-proto/endpoints_proto_datastore/ndb/model.py", line 139, in FromValue 
    return modelclass.FromMessage(value) 
    File "/Users/buddydelaune/Dev/Apps/noble-py-proto/endpoints_proto_datastore/ndb/model.py", line 1216, in FromMessage 
    if not field.name in message._Message__decoded_fields: 
AttributeError: 'Location' object has no attribute '_Message__decoded_fields'

任何洞察到这将不胜感激。提前致谢。

来源

2016-03-25 BuddyD

对不起，我应该早些时候回答这个问题，但这个问题已经修复。这实际上是一个端点 - 原型数据存储模型的bug，其中传入的json没有被正确解析并转换成它们各自的数据存储实体。我发布了有关此问题here的更好描述，您可以看到修复程序实施here。

来源

2016-03-31 21:40:37 BuddyD

我不熟悉的EndpointsModel但看着你的代码，我可以看到选址模型没有一个条目

_message_fields_schema

像你这样的UserPost模型。你为什么不尝试这样做，看看它是否能解决问题？

来源

2016-03-31 19:40:09

对象没有属性_Message__decoded_fields

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