从2.3.19升级至2.5.0-dev7报错，非coder求解

[chouj]

Traceback (most recent call last):
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 701, in __call__
handler.get(*groups)
File "/base/data/home/apps/scsers/3.360519158508612839/main.py", line 135, in get
home_rendered = template.render(path, template_values)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/template.py", line 92, in render
return t.render(Context(template_dict))
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/template.py", line 128, in wrap_render
return orig_render(context)
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 168, in render
return self.nodelist.render(context)
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 705, in render
bits.append(self.render_node(node, context))
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 718, in render_node
return(node.render(context))
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/defaulttags.py", line 122, in render
nodelist.append(node.render(context))
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 767, in render
output = self.filter_expression.resolve(context)
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 563, in resolve
obj = resolve_variable(self.var, context)
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/template/__init__.py", line 650, in resolve_variable
current = getattr(current, bits[0])
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 3691, in __get__
instance = get(reference_id)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 1537, in get
return get_async(keys, **kwargs).get_result()
File "/base/python_runtime/python_lib/versions/1/google/appengine/api/apiproxy_stub_map.py", line 604, in get_result
return self.__get_result_hook(self)
File "/base/python_runtime/python_lib/versions/1/google/appengine/datastore/datastore_rpc.py", line 1469, in __get_hook
entities = rpc.user_data(entities)
File "/base/python_runtime/python_lib/versions/1/google/appengine/api/datastore.py", line 600, in local_extra_hook
return extra_hook(result)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 1507, in extra_hook
model = cls1.from_entity(entity)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 1442, in from_entity
return cls(None, _from_entity=entity, **entity_values)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 974, in __init__
prop.__set__(self, value)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 614, in __set__
value = self.validate(value)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 3213, in validate
value = super(IntegerProperty, self).validate(value)
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py", line 641, in validate
raise BadValueError('Property %s is required' % self.name)
BadValueError: Property notification_position is required

[life]

请问哪里可以下载到2.5.0-dev7这个版本?
另，2.5.0-dev7是否是支持gae的版本中最新的版本?
非常感谢！

[chouj]

@life http://github.com/livid/v2ex zip就是
是否支持GAE最新版就得问 @livid 了。

[guokb]

@chouj 請問LZ上面的問題有沒有解決呢？

[chouj]

@guokb 没有解决。在GAE里选择这次更新的版本号的话，依然如上报错。所以还是选回了旧版本。

[guokb]

@chouj 我是從 2.4.0-RC1 升級到 2.5.0-dev7 時出現跟妳類似的錯誤（詳見 t/50275 ）， 最後2行反饋的亦是：

raise BadValueError('Property %s is required' % self.name)
BadValueError: Property notification_position is required

然後，只是去瀏了下 model.py ，topic.py ，notifications.py 這三個文件:

1. 在model.py中的第150-152行，有這麼一段

raise datastore_errors.BadValueError(
"Property %s must be convertible to a %s instance (%s)" %
(self.name, self.data_type, value))

2. 在topic.py中有不少帶"notification"的句子，可以去搜下......

3. 在notifications.py中，有兩段是關於notification_position的:

例如第55-57行

if self.member.notifications_position != n.num:
self.member.notifications_position = n.num
self.member.put()

第82-83行
if member.notifications_position is None:
member.notifications_position = 0

但是，我是個代碼盲啊，不知道哪裏下手爲好，所以折騰不成功後也不了了之。

so , 還是希望有熟悉babel且好心的童鞋們能夠提供一點兒協助吧！！thx!