Issue with scheduled function. Error: Value for argument "value" is not a valid query constraint. Cannot use "undefined" as a Firestore value

Question

我正在编写一个云函数，用于将过期事件从一个集合移动到另一个集合。它没有按预期工作，我是 Javascript 的新手。请救救我。

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

admin.initializeApp();

const db = admin.firestore();

exports.expireEvents = functions.region("us-west2").pubsub.schedule('* * * * *').onRun(async (context) => {
  await db.collection("Events").where('endDate', '<=', admin.firestore.Timestamp.now().millisecondsSinceEpoch).get().then((snapshot) => {
      snapshot.forEach(async (doc) => {
      // For all expired events, we will perform operations on some of their fields
      const event = doc.data();
      // Write document to collection of "expired events"
      await db.collection("ArchivedEvents").doc(event.eid).set(event);

      // For all the guests in that expired event, do stuff; guests should be a list of strings.
      event.guests.forEach(async (uid) => {
        // Create a new write batch
        const batch = db.batch();
        // Get user and update some attributes
        const guest = await db.collection("Users").doc(uid);
        // Add all operations to be performed for given user to this batch
        batch.update(guest, {eventsAttended: admin.firestore.FieldValue.arrayUnion(event.eid)});
        batch.update(guest, {eventsAttending: admin.firestore.FieldValue.arrayRemove(event.eid)});
        // Execute batch of operations
        await batch.commit();
      });
      // Delete doc from "not expired" collection
      await db.collection("Events").doc(event.eid).delete();
    });

    console.log(`Successfully expired events ending on ${admin.firestore.Timestamp.now()}.`);
    return true;
  })
  .catch((err) => {
    console.error(`Could not get or update documents. Error ${err}.`);
    return false;
  });
});

这是错误的下一部分。我尝试使用一个没有文档和一些文档的集合，但我开始认为因为 none 其中的文档已经过期，这就是我收到此错误的原因？

错误日志的其余部分

If you want to ignore undefined values, enable `ignoreUndefinedProperties`.
    at Object.validateUserInput (/workspace/node_modules/@google-cloud/firestore/build/src/serializer.js:277:19)
    at validateQueryValue (/workspace/node_modules/@google-cloud/firestore/build/src/reference.js:2230:18)
    at CollectionReference.where (/workspace/node_modules/@google-cloud/firestore/build/src/reference.js:1061:9)
    at /workspace/index.js:139:33
    at cloudFunction (/workspace/node_modules/firebase-functions/lib/cloud-functions.js:131:23)
    at /layers/google.nodejs.functions-framework/functions-framework/node_modules/@google-cloud/functions-framework/build/src/function_wrappers.js:144:25
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

Answer 1

你至少有两个问题：

我想你想要一个 JavaScript Date 对象（不是 Firebase Timestamp 对象）在你的查询中，即 where('endDate', '<=', new Date())
Firebase Timestamp 没有 millisecondsSinceEpoch 属性，我认为这是导致您遇到的“未定义”错误的原因。

Issue with scheduled function. Error: Value for argument "value" is not a valid query constraint. Cannot use "undefined" as a Firestore value

Issue with scheduled function. Error: Value for argument "value" is not a valid query constraint. Cannot use "undefined" as a Firestore value

javascript

google-cloud-platform

google-cloud-functions

google-cloud-firestore