feat(cart): Shipping methods (#6101)

packages/cart/src/models/line-item.ts

@@ -94,13 +94,13 @@ export default class LineItem {
   @Property({ columnType: "jsonb", nullable: true })
   variant_option_values?: Record<string, unknown> | null
 
-  @Property({ columnType: "boolean", default: true })
+  @Property({ columnType: "boolean" })
   requires_shipping = true
 
-  @Property({ columnType: "boolean", default: true })
+  @Property({ columnType: "boolean" })
   is_discountable = true
 
-  @Property({ columnType: "boolean", default: false })
+  @Property({ columnType: "boolean" })
   is_tax_inclusive = false
 
   @Property({ columnType: "numeric", nullable: true })

packages/cart/src/models/shipping-method.ts

@@ -16,16 +16,20 @@ import ShippingMethodAdjustmentLine from "./shipping-method-adjustment-line"
 import ShippingMethodTaxLine from "./shipping-method-tax-line"
 
 @Entity({ tableName: "cart_shipping_method" })
+@Check<ShippingMethod>({ expression: (columns) => `${columns.amount} >= 0` })
 export default class ShippingMethod {
   @PrimaryKey({ columnType: "text" })
   id: string
 
+  @Property({ columnType: "text" })
+  cart_id: string
+
   @ManyToOne(() => Cart, {
     onDelete: "cascade",
     index: "IDX_shipping_method_cart_id",
-    fieldName: "cart_id",
+    nullable: true,
   })
-  cart: Cart
+  cart?: Cart | null
 
   @Property({ columnType: "text" })
   name: string
@@ -34,7 +38,6 @@ export default class ShippingMethod {
   description?: string | null
 
   @Property({ columnType: "numeric", serializer: Number })
-  @Check({ expression: "amount >= 0" }) // TODO: Validate that numeric types work with the expression
   amount: number
 
   @Property({ columnType: "boolean" })