我有模特 User
class User(db.DynamicDocument):
user_id = db.UUIDField(primary_key=True,required=True,default=uuid.uuid4)
name = db.StringField(default='')
phone = db.ListField(db.StringField,default=list)
gcm_details = db.ListField(db.EmbeddedDocumentField('UserGCM'),default=list)
其中gcm_details是EmbeddedDocumentField
其详细信息,如下所示:-
class UserGCM(db.EmbeddedDocument):
gcm_key = db.StringField(default='')
device_id = db.StringField(default='')
我执行插入查询,如下所示:
name = 'something'
phone = ['12345678','456789']
gcm_obj = UserGCM(gcm_key=gcm_key,device_id=device_id)
user = User(name=name,push__phone=phone,push__gcm_details=gcm_obj).save()
这将保存。但是,当我在mongo shell中看到详细信息时,会得到以下文档。
{
"_id": BinData(3,
"MjpPJaNTQ823WuA8BP47jQ=="),
"parent_id": BinData(3,
"Ig7LNNAVQzCbjYG2KXvQjw=="),
"name": "something",
"phone": [
],
"gcm_details": [
],
"push__phone": [
"9999999999"
],
"push__gcm_details": {
"gcm_key": "string",
"device_id": "string",
"_cls": "UserGCM"
}
}
请注意为空phone
和gcm_details
字段,以及已添加push__phone
和push__gcm_details
字段。这是怎么回事?
如果我只是做
user = User(name=name,phone=phone,gcm_details=gcm_obj).save()
如果不使用push__
,则会引发错误消息:
TypeError: unbound method _validate() must be called with StringField instance as first argument (got unicode instance instead)
这是怎么回事?我在做什么错?
您的错误在这里:
电话= db.ListField(db.StringField,默认=列表)
您应该使用StringField
类似这样的实例:
phone = db.ListField(db.StringField(), default=list)
然后,您将能够做您想做的事情:
name = 'something'
phone = ['12345678', '456789']
gcm = UserGCM(gcm_key=gcm_key, device_id=device_id)
user = User(
name=name,
phone=phone,
gcm_details=[gcm],
).save()
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