出于测试目的,我部署了以下 Firebase 云功能。当函数被调用时,它会向我的 Firestore 集合添加一个文档,其中两个字段包含两个日期时间。
@https_fn.on_call(region='europe-west1', vpc_connector='connector1', vpc_connector_egress_settings=options.VpcEgressSetting('ALL_TRAFFIC'))
def testing(req: https_fn.CallableRequest):
firestore_client: google.cloud.firestore.Client = firestore.client()
visit_collection = firestore_client.collection('visits')
visit_collection.add(
{
'test1': datetime.now().astimezone(),
'test2': datetime.now().replace(hour=0, minute=0, second=0, microsecond=0).astimezone(),
},
'test'
)
在 Firebase 控制台中查看 Cloud Firestore 中的文档内容时,我对文档中字段值的期望是(如果是 19:50):
test1: 23 March 2024 at 19:50:00 UTC+1
test2: 23 March 2024 at 00:00:00 UTC+1
相反,我在文档中看到的是:
test1: 23 March 2024 at 19:50:00 UTC+1
test2: 23 March 2024 at 01:00:00 UTC+1
我使用 pytz 包避免了这个问题:
import pytz
from datetime import datetime, time
from firebase_functions import https_fn, options
from firebase_admin import initialize_app, auth, firestore
import google.cloud.firestore
@https_fn.on_call(region='europe-west1', vpc_connector='connector1', vpc_connector_egress_settings=options.VpcEgressSetting('ALL_TRAFFIC'))
def testing(req: https_fn.CallableRequest):
firestore_client: google.cloud.firestore.Client = firestore.client()
visit_collection = firestore_client.collection('visits')
brussels_tz = pytz.timezone('Europe/Brussels')
current_datetime = datetime.now(brussels_tz)
current_date = current_datetime.date()
midnight_brussels = datetime.combine(current_date, time())
midnight_brussels = brussels_tz.localize(midnight_brussels)
visit_collection.add(
{
'test1': current_datetime,
'test2': midnight_brussels,
},
'test'
)