Firestore REST API添加时间戳 [英] Firestore REST API add Timestamp

问题描述

我正在尝试通过REST API(

我必须为SERVER_TIME_STAMP写什么?对于其他语言，似乎有一个常量，例如 firebase.database.ServerValue.TIMESTAMP ，服务器将用其当前时间替换该常量.但是API不接受像thees这样的值.

错误消息是

"code": 400,
  "message": "Invalid value at 'document.fields[0].value.timestamp_value' (type.googleapis.com/google.protobuf.Timestamp), Field 'timestampValue', Illegal timestamp format; timestamps must end with 'Z' or have a valid timezone offset.",

解决方案

对于REST API，您应使用DocumentTransform-> FieldTransform-> setToServerValue->将ServerValue设置为REQUEST_TIME. >

好像DocumentTransform似乎只能在write和commit API上使用，而不能在createDocument或patch上使用.您可以使用commit API代替patch.

https://firebase.google.com/docs/firestore/reference/rest/v1beta1/Write#ServerValue

I am trying to add Data to Cloud Firestore via the REST API (https://developers.google.com/apis-explorer/#search/firestore/firestore/v1beta1/firestore.projects.databases.documents.createDocument)

I am able to create a new Document with e.g. an Integer Value, so the connection and the syntax seems to be ok.

In the next step I want to add the server side timestamp to the document. Because I make the POST-Request from an ESP32 and the time is not available. The Request-Body looks like:

{  
   "fields":{  
      "myTime":{  
         "timestampValue":"SERVER_TIME_STAMP"
      }
   }
}

What do I have to write for SERVER_TIME_STAMP? For other languages there seems to be an Constant like firebase.database.ServerValue.TIMESTAMP that the server will replace with its current time. But the API does not accept values like thees.

The Error-msg is

"code": 400,
  "message": "Invalid value at 'document.fields[0].value.timestamp_value' (type.googleapis.com/google.protobuf.Timestamp), Field 'timestampValue', Illegal timestamp format; timestamps must end with 'Z' or have a valid timezone offset.",

解决方案

For REST API, you should use DocumentTransform -> FieldTransform -> setToServerValue -> set ServerValue as REQUEST_TIME.

Seems like DocumentTransform is only available for use on write and commit API and not createDocument or patch. You can use commit API as a substitute of patch.

https://firebase.google.com/docs/firestore/reference/rest/v1beta1/Write#ServerValue

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