Firebase 与键关联的实时数据库访问值

Question

我有几个问题。 我试图通过 http.onReuest firebase 函数使用 firebase-admin sdk 验证密钥。

所以我在这里做的是，管理员只需在 web 客户端上输入用户的电子邮件 ID 即可向用户发送邀请链接。 So when admin send an invitation, it pushed the email id into the firebase database and capture the auto generated key and attach the key into the URL and send the url to the user. 当用户点击 email 中的链接时，它会向下面的 function 发出 get 请求，url 将其拆分并相应地搜索 id 到数据库中并返回响应。

但是搜索与键关联的值不起作用。 我尝试了不同的代码片段，但都没有工作。

A - /*邀请 URL 格式 - https://web-url.com/invite/[ teacher-unique-id ]=[ auto-gen-key-id ] */

app.get('/invite/:token', (req, res) => {
    var result = req.params.token.split("=");
    const ref = database.ref('/teachers/' + result[0] + '/invited/');
    ref.once('value', (snap) => {
        snap.forEach((data) => {
            if (data.key === result[1]) res.send(data.val());
            else res.send("No user found... :(");
        });
    });
});


exports.fakeApp = functions.https.onRequest(app);

乙-

// verify invite link and add to database
app.get('/invite/:token', (req, res) => {
    var result = req.params.token.split("=");
    const ref = database.ref('/teachers/' + result[0] + '/invited/');
    ref.orderByKey().equalTo(result[1]).on("child_added" /* also tried "value" */, (snap)=>{
        res.send({
            status:"sucess",
            value: snap.val()
        });
    });
});

此外，我每 15 秒一直到达终点，有时它显示成功，但大多数时候它显示内部服务器错误或超时错误或错误：无法处理请求

编辑

    {
    "teachers":
    {
        "teacher-unique-id":
        {
            "invited":
            {
                "auto-gen-key-id": "student-email-id-1",
                "auto-gen-key-id": "student-email-id-2",
                "auto-gen-key-id": "student-email-id-3",
                "auto-gen-key-id": "student-email-id-4",
                "auto-gen-key-id": "student-email-id-5",
            },
            "accepted":
            {
                "auto-gen-key-id": "unique-student-id-1",
                "auto-gen-key-id": "unique-student-id-2",
                "auto-gen-key-id": "unique-student-id-3",
            }
        }
    },
    "students":
    {
        "unique-student-id-1":
        {
            "session-id-1":
            {
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
            },
            "session-id-2":
            {
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
            }
        },
        "unique-student-id-2":
        {
            "session-id-1":
            {
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
            },
            "session-id-2":
            {
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
                "auto-gen-key-id": "data",
            }
        }
    }
}

Answer 1

最后我自己修好了！ ---

// 验证邀请链接并添加到数据库

app.get('/invite/:token', (req, res) => {
    let result = req.params.token.split("=");
    let ref = database.ref('/teachers/' + result[0] + '/invited/');

    ref.child(result[1]).once('value').then(snap => {
        if (snap.val() != null) {
            res.send({
                msg: "Hurray! You exists",
                status: "Found",
                val: snap.val(), 
            });
        } else {
            res.send({
                msg: "Please Don't Hack me", 
                status: "Not Found"
            });
        }
    }).catch(err => {
        throw new functions.https.HttpsError('unknown', error.message, error);
    });

});