Schedule cloud function to update a list of maps-CodePudding

I'm trying to write a scheduled cloud function to reset the value of "status" every day at 12 am. Here's my firestore structure: Firestore Data

I haven't really tried coding in javascript before but here's what I managed with my little knowledge:

const functions = require("firebase-functions");

const admin = require("firebase-admin");
admin.initializeApp();

const database = admin.firestore();


exports.Rst = functions.pubsub.schedule("0 0 * * *").onRun((context) => {
  const alist =
      database.collection("SA1XAoC2A7RYRBeAueuBL92TJEk1")
          .doc("afternoon").get().then((snapshot)=>snapshot.data["list"]);

  for (let i=0; i<alist.length; i  ) {
    alist[i]["status"]=0;
  }

  database.collection("SA1XAoC2A7RYRBeAueuBL92TJEk1")
      .doc("afternoon").update({
        "list": alist,
      });

  return null;
});

I get the following error when I deploy this function: Error

Expected Result: Set the values of all "status" fields to 0.

CodePudding user response：

It seems that alist is an object that Firestore can't handle. To get rid of any of the parts that Firestore can't handle, you can do:

database.collection("SA1XAoC2A7RYRBeAueuBL92TJEk1")
    .doc("afternoon").update({
      "list": JSON.parse(JSON.stringify(alist)) //