问题描述
我是 Marshmallow 的新手,我遇到了以下错误,我无法理解。
我正在尝试将以下数据加载到客户端架构中:{address: "test123",client: "test123",contact: "test123",phoneNumber: "test123",postcode: "test123"}
从阅读其他线程有一些建议,我应该在传递给 Schema.load 之前对数据使用“json.loads()”,但我无法让它工作!
以下是我尝试将客户端数据加载到架构中的地方:
# Create a person instance using the schema and the passed in client
schema = ClientSchema()
new_client = schema.load(client,session=db.session).data
# Add the person to the database
db.session.add(new_client)
db.session.commit()
以下是我使用的模型:
class Client(db.Model):
__tablename__ = "client"
client_id = db.Column(db.Integer,primary_key=True)
client = db.Column(db.String(32))
address = db.Column(db.String(32))
postcode = db.Column(db.String(32))
contact = db.Column(db.String(32))
phoneNumber = db.Column(db.String(32))
timestamp = db.Column(
db.DateTime,default=datetime.utcNow,onupdate=datetime.utcNow
)
sites = db.relationship(
"Site",backref="client",cascade="all,delete,delete-orphan",single_parent=True,order_by="desc(Site.timestamp)",)
以下是我使用的架构:
class ClientSchema(ma.sqlAlchemyAutoSchema):
def __init__(self,**kwargs):
super().__init__(strict=True,**kwargs)
class Meta:
model = Client
sqla_session = db.session
load_instance = true
sites = fields.nested("ClientSiteSchema",default=[],many=True)
我在尝试发布数据时遇到的错误如下:
File "C:\Users\User\PycharmProjects\mbonline\mbonline\api\clients.py",line 78,in create
new_client = schema.load(client,session=db.session).data
File "C:\Users\User\PycharmProjects\mbonline\venv\lib\site-packages\marshmallow_sqlalchemy\schema\load_instance_mixin.py",line 92,in load
return super().load(data,**kwargs)
File "C:\Users\User\PycharmProjects\mbonline\venv\lib\site-packages\marshmallow\schema.py",line 588,in load
result,errors = self._do_load(data,many,partial=partial,postprocess=True)
File "C:\Users\User\PycharmProjects\mbonline\venv\lib\site-packages\marshmallow\schema.py",line 711,in _do_load
raise exc
marshmallow.exceptions.ValidationError: {'_schema': ['Invalid input type.']}
感谢所有的帮助,这让我沮丧了一段时间!
解决方法
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