带有 firebase-admin python sdk 的 Firebase Firestore 服务器时间戳

Firebase Firestore Server Timestamp with firebase-admin python sdk

firebase-admin python sdk 有添加服务器时间戳的方法吗? 我试试:

firestore.SERVER_TIMESTAMP
firestore.constants.SERVER_TIMESTAMP

但是,我得到了这个例外:

TypeError: ('Cannot convert to a Firestore Value', <object object at 0x10380fc20>, 'Invalid type', <class 'object'>)

firestore.SERVER_TIMESTAMP 对我有用。这是完整的示例:

import firebase_admin
from firebase_admin import firestore

# I have GOOGLE_APPLICATION_CREDENTIALS configured.
firebase_admin.initialize_app()
client = firestore.client()
result = client.collection('test').document('foo').set({
    'mytime':firestore.SERVER_TIMESTAMP
})
print(result)

这打印出来:

update_time {
  seconds: 1523491166
  nanos: 932097000
}

并且该值按预期存储在数据库中。