sequelize capitalize name before saving in database - 实例钩子

Question

我是 sequelize 的新手，每次我创建一个新的 "Rider" 时，我都试图将名字的第一个字母大写，所以它看起来大写在我的 table 上。我没能做到：

这是我的模型：

const db = require("./db");
const Sequelize = require("sequelize");

//(w / WSL ranking, Last tournament won, Country, favorite wave, current board).
const Rider = db.define("rider", {
  name: {
    type: Sequelize.STRING,
    allowNull: false
  },
  country: Sequelize.STRING,
  wsa: {
    type: Sequelize.INTEGER,
    allowNull: false
  },
  currentBoard: {
    type: Sequelize.STRING,
    allowNull: false
  },
  favWave: Sequelize.STRING,
  lastTournamentWon: Sequelize.STRING,
  img: {
    type: Sequelize.TEXT,
    defaultValue:
      "no_found.png"
  }


});

Rider.beforeCreate = () => {
  return this.name[0].toUpperCase() + this.name.slice(1);
}

module.exports = Rider;

当我创建一个新行时，名称没有大写，我一直没能找出原因？我必须传递一个实例和一个回调函数作为我的钩子的参数吗？

Answer 1

正如@iwaduarte 的评论中提到的，您需要传递实例，如下所示

const User = sequelize.define('user', {
  username: Sequelize.STRING,
});

User.hook('beforeCreate', (user, options) => {
  user.username = user.username.charAt(0).toUpperCase() + user.username.slice(1);
});

sequelize.sync({ force: true })
  .then(() => User.create({
    username: 'one',
  }).then((user) => {
    console.log(user.username);
  })
);

sequelize capitalize name before saving in database - 实例钩子

sequelize capitalize name before saving in database - instance hook

hook

sequelize.js