Magento 2 plugin change price of products that have a custom attribute with

Question

I'm trying to change the prices of products with a plugin. And it works, basically. The problem is this: i only need to change the price of products that have a specific attribute, not the price of all products. With a plugin, it's easy to add a fixed value to the price of a product, but i can't figure out how to check if the product has that custom attribute. this is the code I'm using:

namespace Frostmage\WBTPDC\Plugin;

class Product
{


    public function afterGetPrice(\Magento\Catalog\Model\Product $subject, $result)
    {

        $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
        $wbtvalue = $objectManager->get('Magento\Framework\App\Config\ScopeConfigInterface')->getValue('wbtpdc/modifier/variable');


        return $result * $wbtvalue;
    }
}

Now... It works for the value I added, but I need to add a check, sort of like this:

if ($subject->getData('has_wbt'))
{
    return $result + ($wbtvalue * $subject->getData(weight));
}

Thing is that $subject is not the right variable to use (I wrote that just to exemplify what I need to do). If I try to use objectManager to create a $current_product variable, it always returns an exception for calling getData on null. If I use $subject, it always returns 0. So this is the problem: How can I change the price only of products that have 'has_wbt' attribute so that it shows on the frontend? I mean, is there a way to have this plugin only act on products that have a specific attribute?

Answer 1

Below Code is working for me:

if($subject->hasData('color'))
{                
   return 10;             
} 

Now Go to the Store->Product Attribute->Edit Your Attribute->Storefront Properties->Used in Product Listing->Yes

Then save your attribute.