[英]How to update a Firestore field from a pub sub function
我已经设置了一个 pub/sub 函数来每分钟触发一次,我想检查当前时间是否等于任何 Firestore 实体的开始时间,然后更改一个值,如果是:
exports.updateDraftStatus = (event, context) => {
const pubsubMessage = event.data;
console.log(Buffer.from(pubsubMessage, 'base64').toString());
const db = admin.firestore();
time = admin.firestore.Timestamp.fromMillis(Date.now())
const snap = db.collection("leagues").where("startTime", time).get()
await Promise.all(snap.docs.map(doc => doc.ref.update({Started: 'Off'})));
};
.get()
方法返回一个Promise<QuerySnapshot>
,而不是一个QuerySnapshot
。 您将需要await
快照,或使用then()
块。
exports.updateDraftStatus = async (event, context) => {
const pubsubMessage = event.data;
console.log(Buffer.from(pubsubMessage, 'base64').toString());
const db = admin.firestore();
time = admin.firestore.Timestamp.fromMillis(Date.now())
const snap = await db.collection("leagues").where("startTime", time).get()
await Promise.all(snap.docs.map(doc => doc.ref.update({Started: 'Off'})));
};
或者
exports.updateDraftStatus = (event, context) => {
const pubsubMessage = event.data;
console.log(Buffer.from(pubsubMessage, 'base64').toString());
const db = admin.firestore();
time = admin.firestore.Timestamp.fromMillis(Date.now())
return db.collection("leagues").where("startTime", time).get().then((snap) => {
return Promise.all(snap.docs.map(doc => doc.ref.update({Started: 'Off'})));
})
};
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