带有参数的Typeorm侦听器

import { Entity, PrimaryGeneratedColumn, Column, EventSubscriber, EntitySubscriberInterface } from 'typeorm';

@Entity()
export class User {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @Column()
  email: string;
}

@EntitySubscriber(User)
export class UserSubscriber implements EntitySubscriberInterface<User> {
  beforeInsert(event: InsertEvent<User>, context: any) {
    console.log('Before insert:', event.entity);
    // 可以根据 context 参数执行不同的逻辑
    if (context.userRole === 'admin') {
      event.entity.name = event.entity.name.toUpperCase();
    }
  }
}

// 使用示例
const userRepository = connection.getRepository(User);
const user = new User();
user.name = 'john';
user.email = 'john@example.com';

userRepository.save(user, { userRole: 'admin' });

userRepository.save(user, { userRole: 'admin' });

@EntitySubscriber(User)
export class UserSubscriber implements EntitySubscriberInterface<User> {
  // ...
}