如何根据mongoDB中的对象数量对表进行连续编号？

const mongoose = require('mongoose');

// 定义对象模型
const objectSchema = new mongoose.Schema({
  sequence: {
    type: Number,
    default: 0
  },
  // 其他字段...
});

// 创建对象模型
const ObjectModel = mongoose.model('Object', objectSchema);

// 插入新对象时自动递增sequence字段的值
objectSchema.pre('save', async function(next) {
  const count = await ObjectModel.countDocuments();
  this.sequence = count + 1;
  next();
});

// 连接到MongoDB数据库
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Error connecting to MongoDB:', error);
  });

// 插入新对象
const newObject = new ObjectModel({
  // 其他字段...
});

newObject.save()
  .then((savedObject) => {
    console.log('New object saved with sequence:', savedObject.sequence);
  })
  .catch((error) => {
    console.error('Error saving new object:', error);
  });