如何在mongodb / mongoose中动态创建多个集合和发送帖子

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

const postSchema = new Schema({
  title: String,
  content: String
});

const Post = mongoose.model('Post', postSchema);

const mongoose = require('mongoose');
const collectionName = 'mycollection';

const MyModel = mongoose.model('MyModel', new mongoose.Schema({}), collectionName);

const post = new Post({
  title: 'My Post',
  content: 'This is my first post'
});

post.save((err) => {
  if (err) {
    console.error(err);
  } else {
    console.log('Post saved successfully');
  }
});