Get Coupon Customer Group Id – Magento

I decided to write this post since there is not much documentation related to getting the customer group id for a coupon.

The best way to achieve this is to grab the customer group id using the function getCustomerGroupIds().

Below is a simple and fast way to get this using the salesrule/rule model.

$collection = Mage::getModel('salesrule/rule')->getCollection()
    ->addFieldToFilter('is_active', 1);
$this->setCollection($collection);

Now you can call your function and grab the customer_group_id for each coupon.

foreach($couponcollection as $rule):
    $myArray = implode(",", $rule->getCustomerGroupIds());
    echo $myArray;
endforeach;

Hope this helps someone out there!