问题描述
class EventEditRequest(BaseModel):
uid: UUID
name: str
start_dt: datetime
end_dt: datetime
我以正文b'{"uid":"a38a7543-20ca-4a50-ab4e-e6a3ae379d3c","name":"test event2222","start_dt":1600414328,"end_dt":1600450327}'
发送请求
因此start_dt
和end_dt
都是unix时间戳。但是在端点中,它们变成带有时区的日期时间。
@app.put('...')
def edit_event(event_data: EventEditRequest):
event_data.start_dt.tzinfo is not None # True
我不想在终结点函数中手动编辑start_dt
和end_dt
来摆脱时区。如何设置我的Pydantic模型,这样它将使日期时间不带有时区?
解决方法
您可以使用自己的@validator来手动解析datetime
:
from datetime import datetime
from pydantic import BaseModel,validator
class Model(BaseModel):
dt: datetime = None
class ModelNaiveDt(BaseModel):
dt: datetime = None
@validator("dt",pre=True)
def dt_validate(cls,dt):
return datetime.fromtimestamp(dt)
print(Model(dt=1600414328))
print(ModelNaiveDt(dt=1600414328))
输出:
dt=datetime.datetime(2020,9,18,7,32,8,tzinfo=datetime.timezone.utc)
dt=datetime.datetime(2020,10,8)
,
另一种实现方法是创建自定义类型
class UnixDatetime(datetime):
@classmethod
def __get_validators__(cls):
yield cls.validate
@classmethod
def validate(cls,v):
if isinstance(v,datetime):
print('Some request sends datetime not in UNIX format',file=sys.stderr)
return v.replace(tzinfo=None)
elif isinstance(v,int):
return datetime.fromtimestamp(v)
assert False,'Datetime came of %s type' % type(v)