使用节点js查询在mongodb中插入嵌入式数组

Question

使用node.js和mongodb

在数组中插入值时遇到问题

1）。 MongoDb Schema

var userScore = new Schema({
    child: {
        quiz_level: {
            current_level: {type:Number},
            level_attempted: {
                type: Array,
                level_id: {type:Number},
                level_complete: {type:Boolean},
                level_score: {type:Number}
            }
        }
    }
});

2）。节点js

try{
    // var quiz = levelScoreQuiz.child;
    var userObj = {
        "child.quiz_level.level_attempted.level_score": req.body.score
    };
    var user = new levelScoreQuiz(userObj);
    user.save(function(err, result){
        if (err) {
            console.log('Error While Saving the reuslt ' +err)
        } else {
            console.log("User score saved successfully");
            res.json(result);
        }
    });
} catch(err){
    console.log('Error While Saving the reuslt ' +err);
    return next(err);
}

3）。 Json的结果       这将显示数组插入的空结果

{
    "__v": 0,
    "_id": "57832f610118546713d23466",
    "child": {
        "quiz_level": {
            "level_attempted": []     //This is the empty array
        }
    }
}