shop-entity.ts

@genericController(c => {
    // Only Shop Owner can modify and delete the shop data
    c.methods("Delete", "Patch", "Put").authorize("ShopOwner")
})
@Entity()
export class Shop extends EntityBase {
    
    @val.required()
    @Column()
    name: string
    
    // restrict anyone to read/write users relation
    @authorize.none()
    @OneToMany(() => User, x => x.shop)
    users: User[]
    
    // this method executed before entity saved to database
    @preSave("post")
    async setShopOwner(@bind.user() user: JwtClaims) {
        // User who created the shop assigned as the Shop Owner by default
        const owner = await getRepository(ShopUser)
            .save({ user: { id: user.userId }, role: "ShopOwner" })
        this.users = [owner]
    }
}