如何将哈希图插入到MongoDB文档中？

const mongoose = require('mongoose');

// 连接到MongoDB数据库
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true });

// 定义哈希图模式
const hashGraphSchema = new mongoose.Schema({
  name: String,
  graph: Object
});

// 创建哈希图模型
const HashGraph = mongoose.model('HashGraph', hashGraphSchema);

// 创建一个包含哈希图数据的对象
const graphData = {
  name: 'myGraph',
  graph: {
    node1: ['node2', 'node3'],
    node2: ['node3'],
    node3: []
  }
};

// 将哈希图数据插入到MongoDB文档中
HashGraph.create(graphData, (err, graph) => {
  if (err) {
    console.error(err);
  } else {
    console.log('哈希图已成功插入到MongoDB文档中：', graph);
  }
});