php - Role based taxes in woocommerce

Question

I am trying to set up a woocommerce store so that users who have a role of wholesaler or designer will automatically be exempt from tax and just have tax disappear from the cart/checkout. I've used the dynamic pricing plugin to provide different prices to different roles but there is no options for tax variations.

Someone posted this code:

// Place the following code in your theme's functions.php file and replace tax_exempt_role with the name of the role to apply to
add_action( 'init', 'woocommerce_customer_tax_exempt' );
function woocommerce_customer_tax_exempt() {
    global $woocommerce;
    if ( is_user_logged_in() ) {
        $tax_exempt = current_user_can( 'tax_exempt_role');
        $woocommerce->customer->set_is_vat_exempt( $tax_exempt );
    }
}

This seems to be working on the front end but breaks the backend. after adding it to functions.php when i go back into the admin area and see this: http://i.imgur.com/nNHMSAZ.png (is this just the new chrome error page?)

The other thing I couldn't figure out is how to add 2 roles instead of just one.

Thanks

Answer 1

The following worked for me for user role "wholesaler". Added to functions.php.

add_filter( 'woocommerce_before_checkout_billing_form', 'prevent_wholesaler_taxes' );

function prevent_wholesaler_taxes() {

     global $woocommerce;

     if( current_user_can('wholesaler')) {

              $woocommerce->customer->set_is_vat_exempt(true);

         } else {

              $woocommerce->customer->set_is_vat_exempt(false);
         }
} //end prevent_wholesaler_taxes

To add multiple user roles, just add to the current_user_can(); function. I think this could work:

 if( current_user_can('wholesaler')||current_user_can('another_user_role') )