如何在nodejs中使用hooks/sequelize更新数据库

const Sequelize = require('sequelize');
const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'mysql' // 根据实际情况选择数据库类型
});

const User = sequelize.define('user', {
  firstName: {
    type: Sequelize.STRING,
    allowNull: false
  },
  lastName: {
    type: Sequelize.STRING
  }
});

User.beforeUpdate((user, options) => {
  // 在更新数据之前执行的逻辑
});

User.beforeUpdate((user, options) => {
  user.firstName = 'New First Name'; // 更新firstName字段的值
});

User.findById(1)
  .then(user => {
    return user.update({
      firstName: user.firstName
    });
  })
  .then(() => {
    console.log('数据更新成功');
  })
  .catch(err => {
    console.error('数据更新失败：', err);
  });