正确使用 IdentifiedReference 和 { wrappedReference: true }

Question

对于 this 我还没有完全理解它，我不想污染原来的问题。我需要始终将 { wrappedReference: true } 与 IdentifiedReference 一起使用吗？

因为，这失败了：

@Entity({ collection: "account" })
export class AccountEntity implements IdEntity<AccountEntity> {
    @PrimaryKey()
    public id!: number;

    @OneToOne(() => ArtistEntity, "account", { wrappedReference: true })
    public artist!: IdentifiedReference<ArtistEntity>;
}

@Entity({ collection: "artist" })
export class ArtistEntity implements IdEntity<ArtistEntity> {
    @PrimaryKey()
    public id!: number;

    @OneToOne(() => AccountEntity, { wrappedReference: true })
    public account!: IdentifiedReference<AccountEntity>;
}

与：

src/entities/artistEntity.ts(15,38): error TS2345: Argument of type '{ wrappedReference: boolean; }' is not assignable to parameter of type '"id" | "name" | "password" | "email" | "image" | "artist" | "collections" | "studios" | ((e: AccountEntity) => any) | undefined'. Object literal may only specify known properties, and 'wrappedReference' does not exist in type '(e: AccountEntity) => any'.

那么，这是正确的吗？

@Entity({ collection: "account" })
export class AccountEntity implements IdEntity<AccountEntity> {
    @PrimaryKey()
    public id!: number;

    @OneToOne(() => ArtistEntity, "account", { wrappedReference: true })
    public artist!: IdentifiedReference<ArtistEntity>;
}

@Entity({ collection: "artist" })
export class ArtistEntity implements IdEntity<ArtistEntity> {
    @PrimaryKey()
    public id!: number;

    @OneToOne(() => AccountEntity)
    public account!: IdentifiedReference<AccountEntity>;
}

Answer 1

问题是您正在尝试将 @OneToOne 装饰器的第二个参数用于选项对象，但目前仅支持第一个或第三个参数

// works if you use the default `TsMorphMetadataProvider`
@OneToOne()
public account!: IdentifiedReference<AccountEntity>;

// use first param as options
@OneToOne({ entity: () => AccountEntity, wrappedReference: true })
public account!: IdentifiedReference<AccountEntity>;

// use third param as options
@OneToOne(() => AccountEntity, undefined, { wrappedReference: true })
public account!: IdentifiedReference<AccountEntity>;

// you can also do this if you like
@OneToOne(() => AccountEntity, 'artist', { owner: true, wrappedReference: true })
public account!: IdentifiedReference<AccountEntity>;

但这会在最终的 v3 版本发布之前发生变化，因此如果您将使用 TsMorphMetadataProvider（默认），即使没有显式 wrappedReference: true.

它也会始终有效

关于即将发生的变化，您可以订阅以下问题：https://github.com/mikro-orm/mikro-orm/issues/265

（这是关于可空性，但这是此更改的另一个副作用）

正确使用 IdentifiedReference 和 { wrappedReference: true }

Correct use of IdentifiedReference and { wrappedReference: true }

mikro-orm