如何使用Sequelize实现用于全文搜索的PostgresQL tsvector？

const { Sequelize, DataTypes } = require('sequelize');

const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'postgres'
});

const Post = sequelize.define('Post', {
  title: {
    type: DataTypes.STRING,
    allowNull: false
  },
  content: {
    type: DataTypes.TEXT,
    allowNull: false
  },
  searchVector: {
    type: DataTypes.TSVECTOR, // 定义一个tsvector类型的字段
    allowNull: false,
    defaultValue: Sequelize.literal('to_tsvector(\'english\', title || \' \' || content)') // 使用to_tsvector函数将title和content字段合并为一个tsvector类型的字段
  }
});

// 创建表
Post.sync();

const searchQuery = 'example search query';

Post.findAll({
  where: Sequelize.literal(`searchVector @@ to_tsquery('english', '${searchQuery}')`)
})
  .then(posts => {
    console.log(posts);
  })
  .catch(error => {
    console.error(error);
  });