Question

返回post数据时如何获得user类别？

实体：

@Entity()
export class Category extends BaseEntity {
  @PrimaryGeneratedColumn()
  id: string;

  @Column()
  name: string;

  @Column()
  description: string;
}

@Entity()
export class Posts extends BaseEntity {
  @PrimaryGeneratedColumn()
  id: string;

  @Column()
  title: string;

  @Column()
  content: string;

  @ManyToMany(() => Category, (category) => category.id, [
    "insert",
    "update",
    "remove",
  ])
  @JoinColumn({ name: "post_categories" })
  categories: Category[];
}

@Entity("users")
export class User extends BaseEntity {
  @PrimaryGeneratedColumn("uuid")
  id: string;

  @Column({ unique: true })
  email: string;

  @ManyToMany(() => Posts)
  @JoinColumn()
  posts: Post;
}

查询：

await this.userRepository.findOne({
  where: { id }
});

这只会返回带有帖子但没有类别的用户模型：

{
  id: 1,
  email: 'foo@bar.com',
  posts: [
    {id: 1, title: 'test', content: 'lorem ipsum...'},
    {id: 1, title: 'test', content: 'lorem ipsum...'},
    {id: 1, title: 'test', content: 'lorem ipsum...'},
  ]
}

Answer 1

您需要给findOne一个relations数组。试试

await this.userRepository.findOne(id, { relations: ["categories"] });

Typeorm：查询以从ManyToMany中获取数据吗？

1 个答案: