Foundation's CartItem, Product and MasterProductVariant became Taxable

Changelog.md

@@ -40,6 +40,7 @@
 - Added the `backorder` field to products and product variants
 - Added the `type` field to the TaxCategory model
 - Added the `Taxable` interface
+- Added the `Taxable` implementation to Foundation's CartItem, Product and MasterProductVariant classes
 - Added the extendable `TaxEngine` (facade) that can resolve tax rates from taxables, billing/shipping addresses (a place for various country-specific taxation drivers)
 - Added the `Merchant` interface
 - BC: Added the `?CheckoutSubject` return type to the `getCart()` method of the `Checkout` interface

src/Foundation/Models/CartItem.php

@@ -18,12 +18,24 @@
 use Vanilo\Adjustments\Support\HasAdjustmentsViaRelation;
 use Vanilo\Adjustments\Support\RecalculatesAdjustments;
 use Vanilo\Cart\Models\CartItem as BaseCartItem;
+use Vanilo\Taxes\Contracts\Taxable;
+use Vanilo\Taxes\Contracts\TaxCategory;
 
-class CartItem extends BaseCartItem implements Adjustable
+class CartItem extends BaseCartItem implements Adjustable, Taxable
 {
     use HasAdjustmentsViaRelation;
     use RecalculatesAdjustments;
 
+    public function getTaxCategory(): ?TaxCategory
+    {
+        $buyable = $this->getBuyable();
+        if ($buyable instanceof Taxable) {
+            return $buyable->getTaxCategory();
+        }
+
+        return null;
+    }
+
     /** @todo rename this in v4 along with the renaming of this method in the Adjustable interface */
     public function itemsTotal(): float
     {

src/Foundation/Models/MasterProductVariant.php

@@ -23,9 +23,10 @@
 use Vanilo\Properties\Traits\HasPropertyValues;
 use Vanilo\Support\Traits\BuyableModel;
 use Vanilo\Support\Traits\HasImagesFromMediaLibrary;
+use Vanilo\Taxes\Contracts\Taxable;
 use Vanilo\Taxes\Traits\BelongsToTaxCategory;
 
-class MasterProductVariant extends BaseMasterProductVariant implements Buyable, HasMedia
+class MasterProductVariant extends BaseMasterProductVariant implements Buyable, HasMedia, Taxable
 {
     use BelongsToTaxCategory;
     use BuyableModel;

src/Foundation/Models/Product.php

@@ -25,9 +25,10 @@
 use Vanilo\Properties\Traits\HasPropertyValues;
 use Vanilo\Support\Traits\BuyableModel;
 use Vanilo\Support\Traits\HasImagesFromMediaLibrary;
+use Vanilo\Taxes\Contracts\Taxable;
 use Vanilo\Taxes\Traits\BelongsToTaxCategory;
 
-class Product extends BaseProduct implements Buyable, HasMedia
+class Product extends BaseProduct implements Buyable, HasMedia, Taxable
 {
     use BelongsToTaxCategory;
     use BuyableModel;