“TypeError: Cannot convert undefined or null to object at Function.entries”使用云功能时出错

Question

问题：

我正在使用 Firebase Cloud Functions 从文档中的 Map 检索 boolean，然后根据其值更新同一文档中的时间戳字段。

预期结果：云 Function 更新“Next Date Due”字段并且没有返回任何错误。

实际结果：云 Function 确实按预期更新了“Next Date Due”字段，但在控制台日志中返回以下错误： Unhandled error TypeError: Cannot convert undefined or null to object at Function.entries () at /workspace/ index.js:49:26 在 QuerySnapshot.forEach (/workspace/node_modules/@google-cloud/firestore/build/src/reference.js:807:22) 在 /workspace/index.js:24:37 在 processTicksAndRejections ( internal/process/task_queues.js:95:5) at async /workspace/node_modules/firebase-functions/lib/common/providers/https.js:400:26 （也作为图片附在此处控制台日志错误）

我试过的：

我在这里仔细查看了我的实现，但似乎无法弄清楚为什么我会收到此错误，特别是当 Cloud Function 按预期运行良好并在调用时更新值时。

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

const admin = require("firebase-admin");
admin.initializeApp();

 exports.convertNextDate = functions.https.onCall(async (data, context) => {

    var user = context.auth.uid;
    var db = admin.firestore();
    var ref = db.collection("routineInformation").doc(user).collection("personalDailyRoutine");


    var snapshot = await ref.get();


    if (snapshot.empty) {
        console.log('No matching documents.');
        return;
    }


    var result1 = await snapshot.forEach((doc) => {

        console.log("going thru");

        let newOne = doc.data();
        let dateFrequency = newOne['Date Frequency'];
        let repeatingPoints = newOne['Repeating Points'];

        let everyWeek = newOne['Every Week'];
        let twiceWeek = newOne['Twice a Week'];
        let everyMonth = newOne['Every Month'];



        function getDay(numberUsed) {
            const date = new Date(new Date().getFullYear(), new Date().getMonth(), new Date().getDate());
            const today = date.getDate();
            const dayOfTheWeek = date.getDay();
            const newDate = date.setDate(today - (dayOfTheWeek || numberUsed));
            return new Date(newDate);
        }

        const today = new Date(new Date().getFullYear(), new Date().getMonth(), new Date().getDate());


          for (let [key, value] of Object.entries(dateFrequency)) {


            if (key == 'Every Day' && value == true) {

                console.log("logging now");

                ref.doc(doc.id).update({
                    "Next Date Due": admin.firestore.Timestamp.fromDate(today)
                });
                return null;
            }

            if (key == 'Every Month' && value == true) {

                const timestamp = everyMonth
                const date = timestamp.toDate();
                after30days = new Date(date.setDate(date.getDate() + 30));

                //rewrite date to 30 days ahead of date stored in repeating points
                ref.doc(doc.id).update({
                    "Next Date Due": admin.firestore.Timestamp.fromDate(after30days)
                });

                //when that day is reached, i.e. == day today, then reset the repeating point date also.
                if (date == today) {
                    ref.doc(doc.id).update({
                        "Repeating Points.Every Month": admin.firestore.Timestamp.fromDate(after30days)
                    });
                }
                return null;

            }

            if (key == 'Every Week' && value == true) {

                console.log("going on")

                for (let [key, value] of Object.entries(everyWeek)) {

                    if (key == 'Monday' && value == true) {
                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(6))
                        });
                    }
                    if (key == 'Tuesday' && value == true) {
                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(5))
                        });
                    }

                    if (key == 'Wednesday' && value == true) {

                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(4))
                        });
                    }

                    if (key == 'Thursday' && value == true) {
                        console.log("retrieving")
                        return ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(3))
                        });
                    }

                    if (key == 'Friday' && value == true) {
                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(2))
                        });
                    }

                    if (key == 'Saturday' && value == true) {
                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(1))
                        });
                    }

                    if (key == 'Sunday' && value == true) {
                        ref.doc(doc.id).update({
                            "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(0))
                        });
                    }
                    return null;
                }
                return null;
            }

            if (key == 'Twice a Week' && value == true) {

                for (let [key, value] of Object.entries(twiceWeek)) {

                    if (key == 'Monday' && value == true) {

                        if (today.getTime() == getDay(6).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(6))
                            });

                        }

                    }
                    if (key == 'Tuesday' && value == true) {

                        if (today.getTime() == getDay(5).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(5))
                            });


                        }

                    }
                    if (key == 'Wednesday' && value == true) {

                        if (today.getTime() == getDay(4).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(4))
                            });

                        }

                    }
                    if (key == 'Thursday' && value == true) {

                        if (today.getTime() == getDay(3).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(3))
                            });

                        }

                    }
                    if (key == 'Friday' && value == true) {

                        if (today.getTime() == getDay(2).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(2))
                            });

                        }

                    }
                    if (key == 'Saturday' && value == true) {
                        if (today.getTime() == getDay(1).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(1))
                            });

                        }

                    }
                    if (key == 'Sunday' && value == true) {

                        if (today.getTime() == getDay(0).getTime()) {
                            ref.doc(doc.id).update({
                                "Next Date Due": admin.firestore.Timestamp.fromDate(getDay(0))
                            });
                        }

                    }


                }




            }


        })

    })


    return console.log("success");

}

);

为什么我会收到此错误？

Answer 1

我通过将{}放在条件的所有初始部分中解决了这个问题。

因此，对于 Cloud Function 的第一部分：

for (let [key, value] of Object.entries(dateFrequency || {})) {
    if (key == 'Every Day' && value == true) {
        console.log("logging now");

        return  ref.doc(doc.id).update({
            "Next Date Due": admin.firestore.Timestamp.fromDate(today)
        });
        return null;
    }
}

等等。