如何在Express/Mongoose中发布/创建一对多请求(嵌入式模型)

const mongoose = require('mongoose');

const commentSchema = new mongoose.Schema({
  text: String,
  author: String
});

const blogSchema = new mongoose.Schema({
  title: String,
  content: String,
  comments: [commentSchema] // 嵌入评论数组
});

const Blog = mongoose.model('Blog', blogSchema);

const express = require('express');
const app = express();
app.use(express.json());

// 连接到MongoDB
mongoose.connect('mongodb://localhost:27017/blogdb', { useNewUrlParser: true, useUnifiedTopology: true });

// 创建博客并嵌入评论
app.post('/blogs', async (req, res) => {
  try {
    const { title, content, comments } = req.body;
    const blog = new Blog({ title, content, comments });
    await blog.save();
    res.status(201).send(blog);
  } catch (error) {
    res.status(400).send(error);
  }
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

{
  "title": "My First Blog",
  "content": "This is the content of my first blog.",
  "comments": [
    {
      "text": "Great blog!",
      "author": "John Doe"
    },
    {
      "text": "I learned a lot from this.",
      "author": "Jane Smith"
    }
  ]
}

const { title, content, comments } = req.body;
if (!title || !content || !comments || !Array.isArray(comments)) {
  return res.status(400).send({ message: 'Invalid data' });
}

mongoose.connect('mongodb://localhost:27017/blogdb', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('Connected to MongoDB'))
  .catch(err => console.error('Failed to connect to MongoDB', err));