我有以下物品。在
class Notification(object):
def __init__(self, **kwargs):
self.name = kwargs.get('name', '')
self.locale = kwargs.get('locale', '')
self.text = kwargs.get('text', '')
def __repr__(self):
return '<Notification(name={self.name!r})>'.format(self=self)
class NotificationThrottle(object):
def __init__(self, **kwargs):
self.notification = kwargs.get('notification', '')
self.time_span = kwargs.get('time_span', '')
self.maximum_count = kwargs.get('maximum_count', '')
self.current_count = kwargs.get('current_count', '')
self.throttle_set_date = kwargs.get('throttle_set_date', '')
def __repr__(self):
return '<NotificationThottle(name={self.type!r})>'.format(self=self)
…以及以下随附的棉花糖示意图
^{pr2}$包括以下数据:
notification_data = {
'name': "new_message",
'locale': "sw_KE",
'text': "mimi ni mzee"
}
notification_throttle_data = {
"time_span": 3600,
"maximum_count": 10,
"current_count": 1,
"throttle_set_date": datetime.utcnow().isoformat()}
当我试图加载上面的NotificationThrottleSchema时,出现以下错误。在
In [1]: from datetime import datetime
In [2]: from .schemas.throttle_schemas import NotificationSchema, NotificationThrottleSchema
In [3]: notification_data = {
'name': "new_message",
'locale': "sw_KE",
'text': "mimi ni mzee"
}
In [4]: notification_throttle_data = {
"time_span": 3600,
"maximum_count": 10,
"current_count": 1,
"throttle_set_date": datetime.utcnow().isoformat()}
In [5]: schema = NotificationSchema()
In [6]: notif_schema = schema.load(notification_data)
In [7]: notif = notif_schema.data
In [8]: notif
Out[8]: <Notification(name=u'new_message')>
In [9]: notification_throttle_data.update({'notification':notif})
In [10]: notification_throttle_data
Out[10]:
{'current_count': 1,
'maximum_count': 10,
'notification': <Notification(name=u'new_message')>,
'throttle_set_date': '2016-04-25T08:19:06.492310',
'time_span': 3600}
In [11]: notif_throttle_schema = NotificationThrottleSchema()
In [12]: notif_throttle = notif_throttle_schema.load(notification_throttle_data)
In [13]: notif_throttle
Out[13]: UnmarshalResult(data={'current_count': 1, 'maximum_count': 10, 'throttle_set_date': datetime.datetime(2016, 4, 25, 8, 19, 6, 492310), 'time_span': 3600}, errors={'notification': {u'_schema': [u'Invalid input type.']}})
In [14]: notif_throttle.data
Out[14]:
{'current_count': 1,
'maximum_count': 10,
'throttle_set_date': datetime.datetime(2016, 4, 25, 8, 19, 6, 492310),
'time_span': 3600}
In [15]:
如您所见,对NotificationThrottle类型的对象的反序列化失败,并出现上面的神秘错误。 我确信这是棉花糖本身的问题,除非我误解了post_load方法的工作方式(它可能返回已定义的对象)
我做错什么了吗?在
您似乎在用通知对象而不是序列化对象更新
notification_throttle_data
。https://marshmallow.readthedocs.org/en/latest/quickstart.html#serializing-objects-dumping你想做的是:
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