将新对象发布到存储在MongoDB数据库中的Array

我在创建这条特定的路线时遇到了麻烦 . 我正在尝试将新的媒体对象发布到媒体数组中，但我的所有代码都将ObjectId保存到数据库而不是保存newMedia对象 . 我在Postman中测试了它，结果如下：

User Structure

AthleteProfile.js

const mongoose = require('mongoose');
const { Schema } = mongoose;

const AthleteSchema = new Schema({
  athEmail: String,
  firstName: {
    type: String,
    validate: {
      validator: (firstName) => firstName.length > 2,
      message: 'Name must be longer than 2 characters.'
    }
  },
  lastName: {
    type: String,
    validate: {
      validator: (lastName) => lastName.length > 2,
      message: 'Name must be longer than 2 characters.'
    }
  },
  profilePic: String,
  accountType: String,
  events: [{
    ref: 'Event',
    type: Schema.Types.ObjectId
  }],
  media: [{
    ref: 'Media',
    type: Schema.Types.ObjectId
  }],
  height: String,
   weight: Number,
   birthday: Date,
  sports: [{
    ref: 'Sport',
    type: Schema.Types.ObjectId
  }]
  gradYear: Number,
  school: String
});

module.exports = AthleteSchema;

Media.js

const mongoose = require('mongoose');
const { Schema } = mongoose;

const MediaSchema = new Schema({
 id: Schema.Types.ObjectId,
 title: String,
 createdTimestamp: Date,
 mediaTimestamp: Date,
 videoUrlEnd: String,
  description: String
});

const Media = mongoose.model('Media', MediaSchema);

module.exports = Media;

route.js

const mongoose = require('mongoose');
const User = require('../models/User');
const Media = require('../models/Media');

exports.postMedia = async (req, res) => {
 const { clientKey } = req.params;
 if (clientKey !== config.clientKey) {
 res.send({ message: 'You do not have the correct client key to access 
 this database.'})
 } else {
 const { id } = req.query;
 const {
   title,
   description,
   videoUrlEnd
 } = req.body;

 let newMedia = new Media({
  _id: mongoose.Types.ObjectId(),
  title: title,
  description: description,
  createdTimestamp: Date.now(),
  mediaTimestamp: Date.now(),
  videoUrlEnd: videoUrlEnd
 });

 console.log(newMedia);

 try {
  let user = await User.findByIdAndUpdate({ _id: id },
  { $push: { 'athleteProfile[0].media': newMedia } },
  {new: true});

   if (!user) {
    return res.status(404).send(new MyError('Not Found Error', ['User 
  for user id ' + id + ' and user id '+ id + ' not found']));
  } else {
    res.status(200).send(user);
  }
  } catch (err) {
   if (err.name === 'MongoError' && err.code === 11000) {
    res.status(409).send(new MyError('Duplicate key', [err.message]));
   }
   res.status(500).send(new MyError('Unknown Server Error', ['Unknow 
   server error when updating user for user id ' + id + ' and user id 
   '+ id]));
  }
 }
 }

我更新了route.js文件，如果它只是一个id，它就会停止将它保存到数据库中 . 我尝试发送请求后，我的console.log看起来像这样 .

[0] App listening on port:  5000
[0] { _id: 5adf651e410ce10b9024c2bb,
[0]   title: 'This is a title',
[0]   description: 'This is a description',
[0]   createdTimestamp: 2018-04-24T17:10:54.055Z,
[0]   mediaTimestamp: 2018-04-24T17:10:54.055Z,
[0]   videoUrlEnd: 
  'http://d23dyxeqlo5psv.cloudfront.net/big_buck_bunny.mp4' }

我很感激你解决这个问题的任何帮助 . 我真的被卡住了为什么它不起作用 . 我在SubDocuments上使用mongoose文档尝试了很多变化，但它仍然无法正常工作 .

更新：此编辑的代码不再将ObjectId保存到数据库 . 我不知道这是否有进展 . 更新了图片以显示整个用户结构 .