Question

我有一个应用程序，需要从阵列中删除UID。因为用户无权编写文档，所以我通过云功能进行更新。我的云功能如下：

async function deleteProjectUserKey(request): Promise<Responce> {
//console.log('deleteProjectUserKey() started');

try {
    const uid = request.body.uid;
    const projectKey = request.body.payload.projectKey;

    const snapshot = await firestore.doc(`/${projectsPath}/${projectKey}`).get();
    const project: Project = <Project>snapshot.data();

    let success = false;
    let idx = project.roUids.findIndex(_uid => _uid === uid);
    if (idx >= 0) {
        project.roUids.splice(idx, 1);
        await firestore.doc(`/${projectsPath}/${projectKey}`).update({ 'roUids': project.roUids });
        success = true;
    } else {
        idx = project.rwUids.findIndex(_uid => _uid === uid);
        if (idx >= 0) {
            project.rwUids.splice(idx, 1);
            await firestore.doc(`/${projectsPath}/${projectKey}`).update({ 'rwUids': project.rwUids });
            success = true;
        }
    }
    if (success) {
        return { status: 200, message: 'Successfully deleted project user key' };
    } else {
        return { status: 400, message: 'No souch project user key' };
    }
}
catch (error) {
    return { status: 400, message: error.message };
}

当我在运行该功能后在控制台中查看时，这似乎工作正常：

但是，我返回的数据仍然包含已删除的UID：

刷新浏览器后，我返回的数据正确无误：

读取客户端数据的功能如下：

getProjects(uid?: string): Observable<Project[]> {
    const _uid = uid !== undefined ? uid : this.uid;
    const rwUids$ = <Observable<Project[]>>this.db.collection(`${projectsPath}`, ref => ref.where('rwUids', 'array-contains', _uid))
        .valueChanges();

    const roUids$ = <Observable<Project[]>>this.db.collection(`${projectsPath}`, ref => ref.where('roUids', 'array-contains', _uid))
        .valueChanges();

    return combineLatest(roUids$, rwUids$)
    .pipe(
        map(([roUids, rwUids]) => [...roUids, ...rwUids]),
        filter(projects => projects.length > 0),
        tap(projects => this.debug('getProjects() emitted', 'projects', projects, 'project', this.dbData.project)),
    );
}

因此，我的应用程序似乎无法自动反映云功能对阵列的更新。有人可以解释为什么吗？

编辑：我试图按照@Renaud Tarnec的建议更改云功能：

async function deleteProjectUserKey(request): Promise<Responce> {
    //console.log('deleteProjectUserKey() started');

    try {
        const uid = request.body.uid;
        const projectKey = request.body.payload.projectKey;
        const readOnlyArray = request.body.payload.readOnlyArray;

        if (readOnlyArray) {
            await firestore.doc(`/${projectsPath}/${projectKey}`).update({
                roUids: admin.firestore.FieldValue.arrayRemove(uid)
            });
        } else {
            await firestore.doc(`/${projectsPath}/${projectKey}`).update({
                rwUids: admin.firestore.FieldValue.arrayRemove(uid)
            });
        }

        return { status: 200, message: 'Successfully deleted project user key' };
    }
    catch (error) {
        return { status: 400, message: error.message };
    }
}

但是结果和以前完全一样：firestore db看起来正确，但是我返回的数组是错误的。

Firebase云功能进行的阵列更新未反映在客户端上

0 个答案: