Firebase云函数-未处理错误错误：更新（）

Question

admin.initializeApp();
const db = admin.firestore();
export const unfollowRemoveUser = functions.https.onCall((data, context) => {

        const user1id = data.user1
        const user2id = data.user2

        const user1DocRef = db.collection('users').doc(user1id)                 
    const user2DocRef = db.collection('users').doc(user2id)    

        const batch = db.batch();

        batch.update(user1DocRef, {followingNum : FieldValue.increment(-1)});
        batch.update(user2DocRef, {followersNum : FieldValue.increment(-1)});

        // Commit the batch
        return batch.commit().then(function () {
            // ...
        });


    });

我搜索并尝试了我能找到的一切，但无法解决这个问题，我甚至试图使用简单的更新文档，但我得到同样的错误。

编辑只有在所有操作都可以成功执行的情况下，才希望批处理执行时应该做什么。示例：如果我对确实存在的文档进行了前两次更新，它们将按-1更新这些值，然后对不存在的文档进行两次删除操作，这不会导致我的函数出错（值将按-1更新，删除不会执行任何操作）

const batch = db.batch();
batch.update(user1DocRef, {followingNum : admin.firestore.FieldValue.increment(-1)});
        batch.update(user2DocRef, {followersNum : admin.firestore.FieldValue.increment(-1)});

        batch.delete(user1FollowingDocRef); //this doesn't exist
        batch.delete(user2FollowersDocRef); //this doesn't exist

        return batch.commit();

但是，如果我首先对不存在的文档进行两次删除操作，整个函数将失败

const batch = db.batch();

    batch.delete(user1FollowingDocRef); //this doesn't exist
    batch.delete(user2FollowersDocRef); //this doesn't exist

    batch.update(user1DocRef, {followingNum : admin.firestore.FieldValue.increment(-1)});
    batch.update(user2DocRef, {followersNum : admin.firestore.FieldValue.increment(-1)});


    return batch.commit();

Answer 1

我在FieldValue中遇到过类似的问题。正如Doug提到的，您需要“导入”FieldValue来使用increment()方法。

你可以内联地做这件事。

batch.update(user1DocRef, {followingNum : admin.firestore.FieldValue.increment(-1)});
batch.update(user2DocRef, {followersNum : admin.firestore.FieldValue.increment(-1)});

或者可以用较短的名称定义常量。

admin.initializeApp();
const db = admin.firestore();
const firestore = admin.firestore;
export const unfollowRemoveUser = functions.https.onCall((data, context) => {

    const user1id = data.user1
    const user2id = data.user2

    const user1DocRef = db.collection('users').doc(user1id)                 
    const user2DocRef = db.collection('users').doc(user2id)    

    const batch = db.batch();

    batch.update(user1DocRef, {followingNum : firestore.FieldValue.increment(-1)});
    batch.update(user2DocRef, {followersNum : firestore.FieldValue.increment(-1)});

    // Commit the batch
    return batch.commit().then(function () {
        // ...
    });


});