mongodb将对象添加到对象数组中

Question

我正在尝试将元素添加到对象数组中，但我在添加超过 1 个对象时遇到问题。

这是我的群组收藏的模型

const userSchema = mongoose.Schema({
name: {type: String, required: true},
password: {type: String, required: true},
description: {type: String, required: true},
scope: String,
groupTeacher: {
    type: mongoose.Types.ObjectId,
    ref: 'users',
},
quizzes:[
    {
        _id: mongoose.Types.ObjectId,
        name: String,
        tier: Number,
        category: String,
        questions:[
            {
                _id: mongoose.Types.ObjectId,
                title: String,
                question: String,
                correctAnswer: String,
                answer1: String,
                answer2: String,
                answer3: String,
                answer4: String
            }
        ],
        usersAttempted:[
            {
                _id: {
                    type: mongoose.Types.ObjectId,
                    ref: 'users',
                },
                //userEmail: String,
                correctAnswers: Number,
                wrongAnswers: Number,
                answers: [{
                    questionTitle: String,
                    correctAnswer: String,
                    usersAnswer: String
                }]

我想将元素添加到“usersAttempted”对象数组中。 我对“答案”部分有疑问。问题是有很多问题的答案，但我只能添加 1 个问题的答案。

我就是这样做的。

    const result = await groupsModel.updateOne({
        "_id": groupId,
        "quizzes._id": quizId,
        "quizzes.usersAttempted._id": {$ne: userId}
    }, 
    {
        $addToSet:{
            "quizzes.$.usersAttempted":{
                _id:userId,
                correctAnswers: questionsCorrect,
                wrongAnswers:   questionsWrong,
                answers:{
                    questionTitle:  answers[0].questionTitle,
                    correctAnswer:  answers[0].correctAnswer,
                    usersAnswer:    answers[0].usersAnswer
                }
            }}});

答案是一个对象数组

感谢您的所有帮助。

编辑：#1
小解释： 我有一个对象数组，我想将它们添加到“usersAttempted”，但添加超过 1 个答案时遇到问题。

编辑：#2

我设法将对象数组添加到集合中，但它是通过索引完成的。

        const result = await groupsModel.updateOne({
        "_id": groupId,
        "quizzes._id": quizId,
        "quizzes.usersAttempted._id": {$ne: userId}
    }, 
    {
        $addToSet:{
            "quizzes.$.usersAttempted":{
                _id:userId,
                correctAnswers: questionsCorrect,
                wrongAnswers:   questionsWrong,
                answers:[{
                    questionTitle:  answers[0].questionTitle,
                    correctAnswer:  answers[0].correctAnswer,
                    usersAnswer:    answers[0].usersAnswer
                },
                {
                    questionTitle:  answers[1].questionTitle,
                    correctAnswer:  answers[1].correctAnswer,
                    usersAnswer:    answers[1].usersAnswer
                },
                {
                    questionTitle:  answers[2].questionTitle,
                    correctAnswer:  answers[2].correctAnswer,
                    usersAnswer:    answers[2].usersAnswer
                }]
                    
            }}});

现在我想找到一种方法来添加一个包含 x 个对象的数组。

Answer 1

当你尝试时会发生什么：

        $addToSet:{
        "quizzes.$.usersAttempted":{
            _id:userId,
            correctAnswers: questionsCorrect,
            wrongAnswers:   questionsWrong,
            answers                    
        }}});

在我看来，您将添加整个答案数组...