一對一關系不適用於 TypeORM

Question

我有兩個模型參考一對一關系。

@Entity()
class Restaurant {

    @PrimaryGeneratedColumn()
    id: number;

    @Column({
        type: 'varchar',
        length: 1000,
        unique: true
    })
    name: string;

    @Column()
    @OneToOne(() => RestaurantType)
    @JoinColumn()
    restaurantType: RestaurantType;
}

@Entity()
class RestaurantType {

    @PrimaryGeneratedColumn()
    id: number;

    @Column({nullable: false})
    resturantType: string;

    @Column({
        type: 'time with time zone', 
        default: Date.now()
    })
    createdAt: Date;
}

但是我在運行服務器時看到了這個錯誤，

DataTypeNotSupportedError: Data type "RestaurantType" in "Restaurant.restaurantType" is not supported by "postgres" database.

為什么會這樣？

Answer 1

您應該從Restaurant實體的restaurantType屬性中移除@Column()裝飾器。

@Entity()
class Restaurant {

    @PrimaryGeneratedColumn()
    id: number;

    @Column({
        type: 'varchar',
        length: 1000,
        unique: true
    })
    name: string;

    @OneToOne(() => RestaurantType)
    @JoinColumn()
    restaurantType: RestaurantType;
}

有關OneToOne關系的更多信息，請參閱文檔。