typescript - 我可以使用部分实体通过 typeorm 进行保存吗？

Question

所以我有这个表结构

--changeset 0004-order:ccushing
create table if not exists "order"."order"
(
    id          uuid primary key                                          not null default uuid_generate_v4(),
    state       uuid references "order".order_status
);

--changeset 0004-h0-table-order_event_type:ccushing
create table if not exists "order".order_event_type
(
    id          uuid primary key                                          not null default uuid_generate_v4(),
    key         text unique                                               not null
);

--changeset 0004-h1-table-order_event:ccushing
create table if not exists "order".order_event
(
    id          uuid primary key                                          not null default uuid_generate_v4(),
    order_id    uuid                                                      not null references "order"."order" (id),
    event_type  uuid                                                      not null references "order".order_event_type (id),
    event       jsonb                                                     not null,
    unique (order_id, event),
    unique (order_id, event_type)
);

我想创建一个新的 OrderEventEntity，但我不想在执行此操作时加载 Order，因为我只会获取 order_id 在事件中。

@Entity('order.order_event')
export default class OrderEventEntity implements Identifiable<string> {
  @PrimaryGeneratedColumn({ type: 'uuid' })
  readonly id!: string;

  @ManyToOne(() => OrderEventTypeEntity, ({ event }) => event)
  readonly eventType!: string;

  @ManyToOne(() => OrderEntity, ({ events }) => events)
  readonly order!: OrderEntity;
}

我能做到吗

const order = new Order({ id: 1234 })
repo.save( new OrderEventEntity({ order: order, ... })

或类似的(也许是部分负载)而不丢失OneToMany？但仍然只有订单 ID。

Answer 1

有两个选项:

1. 在 OrderEventEntity 中定义 order_id 列

@Entity('order.order_event')
export default class OrderEventEntity implements Identifiable<string> {
  @PrimaryGeneratedColumn({ type: 'uuid' })
  readonly id!: string;

  @ManyToOne(() => OrderEventTypeEntity, ({ event }) => event)
  readonly eventType!: string;

  @Column()
  order_id: string;

  @ManyToOne(() => OrderEntity, ({ events }) => events)
  readonly order!: OrderEntity;
}

使用武力施展诡计

const order = { id: 1234 } as Order;
repo.save( new OrderEventEntity({ order: order, ... })