Added product condition rule for variant conditions

CHANGELOG-WIP.md

@@ -1,7 +1,12 @@
 # Release Notes for Craft Commerce (WIP)
 
-## Administration
+### Store Management
 
 - Added support for `to`, `bcc`, and `cc` email fields to support environment variables. ([#3738](https://github.com/craftcms/commerce/issues/3738))
 - Added an `originalCart` value to the `commerce/update-cart` failed ajax response. ([#430](https://github.com/craftcms/commerce/issues/430))
-- Added a new "Payment Gateway" order condition rule. ([#3722](https://github.com/craftcms/commerce/discussions/3722))
+- Order conditions can now have a “Payment Gateway” rule. ([#3722](https://github.com/craftcms/commerce/discussions/3722))
+- Variant conditions can now have a “Product” rule.
+
+### Extensibility
+
+- Added `craft\commerce\elements\conditions\variants\ProductConditionRule`.

src/elements/conditions/variants/ProductConditionRule.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * @link https://craftcms.com/
+ * @copyright Copyright (c) Pixel & Tonic, Inc.
+ * @license https://craftcms.github.io/license/
+ */
+
+namespace  craft\commerce\elements\conditions\variants;
+
+use Craft;
+use craft\base\conditions\BaseElementSelectConditionRule;
+use craft\base\ElementInterface;
+use craft\commerce\elements\db\VariantQuery;
+use craft\commerce\elements\Product;
+use craft\commerce\elements\Variant;
+use craft\elements\conditions\ElementConditionRuleInterface;
+use craft\elements\db\ElementQueryInterface;
+
+/**
+ * Products Condition Rule
+ *
+ * @author Pixel & Tonic, Inc. <[email protected]>
+ * @since 5.3.0
+ */
+class ProductConditionRule extends BaseElementSelectConditionRule implements ElementConditionRuleInterface
+{
+    /**
+     * @inheritdoc
+     */
+    protected function elementType(): string
+    {
+        return Product::class;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getLabel(): string
+    {
+        return Craft::t('commerce', 'Product');
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getExclusiveQueryParams(): array
+    {
+        return ['product', 'productId', 'primaryOwnerId', 'primaryOwner', 'owner', 'ownerId'];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function modifyQuery(ElementQueryInterface $query): void
+    {
+        /** @var VariantQuery $query */
+        $query->ownerId($this->getElementId());
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function matchElement(ElementInterface $element): bool
+    {
+        /** @var Variant $element */
+        return $element->getOwnerId() == $this->getElementId();
+    }
+}

src/elements/conditions/variants/VariantCondition.php

@@ -25,6 +25,7 @@ class VariantCondition extends ElementCondition
     protected function selectableConditionRules(): array
     {
         return array_merge(parent::selectableConditionRules(), [
+            ProductConditionRule::class,
             SkuConditionRule::class,
         ]);
     }