Mongoose 一次性保存动态子文档数组

Question

我搜索了高低，但没有找到解决方案。

我正在尝试保存一组子文档（即动态的）。

Here's my schema:

    const EventSchema = new Schema({
  user: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'users'
  },
  title: {
    type: String,
    required: true
  },
  attendee:[ 
    {
      email: {
        type: String,
        required: true
      },
      name: {
        type: String,
        required: true
      },
      status: {
        type: String
      }
    }]
});

Here's the route:

router.post('/', auth, async (req, res) => {
  const {title, attendee: [{ email, name, status }] } = req.body

  try{  
    const newEvent = new Event({
        title,
        user: req.user.id,
        attendee: [{ email, name, status }]
    });

    const event = await newEvent.save();
    if (!event) throw Error('Something went wrong saving the event');

    res.status(200).json(event);

   
  catch (e) {
  res.status(400).json({ msg: e.message });
}
});

目前我只需要保存数组中的 1 个元素。

数组中的项目总是不同的。

我没有先创建“事件”然后添加“参与者”的选项。

Example of input:

{
    "title": "Something",
    "attendee": [
      {
        "email": "email@gmail.com",
        "name": "Bob"
      },
             {
        "email": "sandwich@gmail.com",
        "name": "Martha"
      }
    ]
  }

Output:

{
  "_id": "5ef1521f06a67811f74ba905",
  "title": "Something",
  "user": "5ecdaf3601cd345ddb73748b",
  "attendee": [
    {
      "_id": "5ef1521f06a67811f74ba906",
      "email": "email@gmail.com",
      "name": "Bob"
    }
  ],
  "__v": 0
}

Answer 1

您可以从请求正文中获取整个与会者数组并按原样保存，而不是对数组的一个对象进行解构。

router.post('/', auth, async (req, res) => {
  
  const eventObj =  {
  user: req.user.id,
  title : req.body.title, 
  // get the whole array of attendee objects from the request
  attendee: req.body.attendee 
  } 

  try{  
    const newEvent = new Event(eventObj);

    const event = await newEvent.save();
    if (!event) throw Error('Something went wrong saving the event');

    res.status(200).json(event);

   
  catch (e) {
  res.status(400).json({ msg: e.message });
}
});

Answer 2

如果我理解正确，您不应该解构 attendee 并将每个与会者插入到新的 Event 中（选择在数据库中插入哪个键）。

const {
  title,
  attendee,
} = req.body;

const newEvent = new Event({
  title,
  user: req.user.id,

  attendee: attendee.map(x => ({
    email: x.email,
    name: x.name,
    status: x.status,
  })),
});