AffiliateWP MLM - Apply a 30% Direct Commission Rate for Affiliates without Sub Affiliates

non-parent-rate.php

/**
 * Apply a 30% direct commission rate for affiliates without Sub Affiliates
 */
function affwp_mlm_get_non_parent_rate( $rate, $affiliate_id, $type, $reference ) {

	// If a per-affiliate rate is set, use that
	if ( affiliate_wp()->affiliates->get_column( 'rate', $affiliate_id ) ) {
		return $rate;
	}	
	
	// Stop if the affiliate has sub affiliates
	if ( affwp_mlm_is_parent_affiliate( $affiliate_id ) ) {
		return $rate;
	} else {
		$rate = 30; // The non-parent rate to apply

		// Format percentage rates
		$rate = ( 'percentage' === $type ) ? $rate / 100 : $rate;
	}
	
	return $rate;

}
add_filter( 'affwp_get_affiliate_rate', 'affwp_mlm_get_non_parent_rate', 10, 4 );