Get product applied price rule by product id in magento 2

Question

Simply I want to get the rule_id or catalog rule details that is applied to a product in product details page and product listing page.

I have checked with this function _getRulesFromProduct() from magento-catalog-rule/Model/Rule.php but it return all catalog rule applicable for that product.

I want only one rule which is currently applied to that product.

Answer 1

Try with below way!

public function getCatalogPriceRuleProductIds()
{
    $storeManager = \Magento\Framework\App\ObjectManager::getInstance()->create(
         '\Magento\Store\Model\StoreManagerInterface'
    );
    $catalogRule = \Magento\Framework\App\ObjectManager::getInstance()->create(
         '\Magento\CatalogRule\Model\RuleFactory'
    );

    $websiteId = $storeManager->getStore()->getWebsiteId();//current Website Id

    $resultProductIds = [];
    $catalogRuleCollection = $catalogRule->create()->getCollection();
    $catalogRuleCollection->addIsActiveFilter(1);//filter for active rules only
    foreach ($catalogRuleCollection as $catalogRule) {
        $productIdsAccToRule = $catalogRule->getMatchingProductIds();
        if (in_array("Your currrent productId", $affectedProductIds)) {
            //product has a price rule set for it
        }
    }
    return $resultProductIds;
}

Please don't use objectmanager. it's bad practice! I hope it helps!

Answer 2

Try getting rules from the resourceModel instead,

I have used objectmanager try to use it as dependency,

public function get($product){ 
    $priceRules = null; 
    $price = $product->getPriceInfo()->getPrice('regular_price')->getAmount()->getValue(); 
    $storeId = $product->getStoreId(); 
    $dateTs = $this->_localeDate->scopeTimeStamp($storeId); 
    $websiteId = $this->_storeManager->getStore($storeId)->getWebsiteId(); 

    if ($product->hasCustomerGroupId()) {
        $customerGroupId = $product->getCustomerGroupId(); 
    } else { 
        $customerGroupId = $this->_customerSession->getCustomerGroupId(); 
    } 

    $resource = $this->_objectManager->create('\Magento\CatalogRule\Model\ResourceModel\Rule');

    $rules = $resource->getRulesFromProduct($dateTs, $websiteId, $customerGroupId,  $product->getId());

    print_r( $rules); 
} 

Let me know if you have any queries