Change combination without changing default one

[ComGrafPL]

Hello,

We need to figure out how to solve it. 3 peoples wasn't able to do it. Even IT from here.

The issue client have is, when you go to the product link, we need to attribute switch to first/next in stock attribute. Even when default attribute have 0 in stock. So client could see add to cart from start.

Default combination cant be changed as it is required to be set like that.

I have tried to add code from @4you.software to link.php in override but it wasn't successful.

//Attribute equal to 0 or empty is useless, so we force it to null so that it won't be inserted in query parameters
        if (empty($idProductAttribute)) {
            $idProductAttribute = null;
        } else {

            // find if attributer is 0 quantity
            $findNewAttributeByQuantity = 0;
            $isQuantityNull = Db::getInstance()->getValue('SELECT quantity FROM '._DB_PREFIX_.'stock_available WHERE id_product = '.$params['id'].' AND id_product_attribute = '. $idProductAttribute);

            if ($isQuantityNull == '0'){
                $findNewAttributeByQuantity = Db::getInstance()->getValue('SELECT id_product_attribute FROM '._DB_PREFIX_.'stock_available WHERE id_product = '.$params['id'].' AND id_product_attribute > 0 AND quantity > 0');
            }

            if ($findNewAttributeByQuantity){
                $idProductAttribute = $findNewAttributeByQuantity;
            }
        }

Any other suggestions?

 

PS: 1.7.8.6