@wearesage/schema/examples/ecommerce/Cart.ts

A flexible schema definition and validation system for TypeScript with multi-database support

import "reflect-metadata";
import { Entity, Id, Property, OneToOne, OneToMany } from "../..";
import { User } from "./User";
import { CartItem } from "./CartItem";

/**
 * A Cart belongs to exactly one User.
 * It holds many CartItems.
 */
@Entity()
export class Cart {
  @Id()
  id: string;

  @Property({ default: () => new Date() })
  createdAt: Date;

  /**
   * One-to-one with User (opposite side of the @OneToOne in User).
   */
  @OneToOne({
    target: () => User,
    inverse: "cart",
    name: "BELONGS_TO_USER",
  })
  user: User;

  /**
   * A cart can have many CartItems.
   * The "inverse" property on CartItem is "cart".
   */
  @OneToMany({
    target: () => CartItem,
    inverse: "cart",
    name: "HAS_ITEM",
  })
  items: CartItem[] = [];
}