无法使用 TypeScript 导入 Sequelize 模型：错误：未传递 Sequelize 实例

Question

我的user.model.ts是：

@Table
export class User extends Model<User> {
    @Column({ allowNull: false })
    firstName: string;

    @Column({ allowNull: false })
    lastName: string;
...

当我尝试导入它时：

    const sequelize = new Sequelize(DB_CREDENTIALS_PARSED.database, DB_CREDENTIALS_PARSED.username, DB_CREDENTIALS_PARSED.password, { dialect: 'postgres' })
    const modelFile = require(path.join(modelPath, 'user.model')).User.init({ sequelize })

    console.log(modelFile)

我收到一个错误： Error: No Sequelize instance passed

我究竟做错了什么？

Answer 1

sequelize 实例必须在init方法的第二个参数中传递

const User = require(path.join(modelPath, 'user.model'));
const sequelize = new Sequelize(
    DB_CREDENTIALS_PARSED.database,
    DB_CREDENTIALS_PARSED.username,
    DB_CREDENTIALS_PARSED.password, {
        dialect: 'postgres'
    }
)
User.init(modelAttributesObject, { sequelize })

但是当您使用续集 TypeScript 时，您可以使用实例初始化模型

const User = require(path.join(modelPath, 'user.model'));
const sequelize = sequelize = new Sequelize({
    dialect: 'postgres',
    database: DB_CREDENTIALS_PARSED.database,
    username: DB_CREDENTIALS_PARSED.username,
    password: DB_CREDENTIALS_PARSED.database,
    models: [User]
});