在WooCommerce中隐藏特定用户角色的增值税

Question

In WooCommerce I have some custom code to hide VAT for specific user roles, and it is working perfectly for all roles except for one called Platinum, where it doesn't hide the VAT but remains as all default user roles.

What I need is for this code to hide VAT for platinum also - it does for the other roles I listed

How can I make it work for my "platinum" user role too?

This is the code I use:

/**
 * Function that will check for user role and turn off VAT/tax for that role
 */
function wc_diff_rate_for_user() {

    // check for the user role
    if ( is_user_logged_in() && current_user_can( 'bronze', 'sølv', 'guld', 'platinum' ) ) {

        // set the customer object to have no VAT
        WC()->customer->is_vat_exempt = true;
    }

}
add_action( 'template_redirect', 'wc_diff_rate_for_user', 1 );

/**
 * Function that filters the variable product hash based on user
 */
function wc_get_variation_prices_hash_filter( $hash, $item, $display ) {

    // check for the user role
    if ( is_user_logged_in() && current_user_can( 'bronze', 'sølv', 'guld', 'platinum' ) ) {

        // clear key 2, which is where taxes are
        $hash['2'] = array();
    }

    // return the hash
    return $hash;
}
add_filter( 'woocommerce_get_variation_prices_hash', 'wc_get_variation_prices_hash_filter', 1, 3 );

/**
 * Function that removes the price suffix (inc. Tax) from variable products based on role
 */
function wc_get_price_suffix_filter( $price_display_suffix, $item ) {

    // check for the user role
    if ( is_user_logged_in() && current_user_can( 'bronze', 'sølv', 'guld', 'platinum' ) ) {

        // return blank if it matches
        return '';
    }

    // return if unmatched
    return $price_display_suffix;
}
add_filter( 'woocommerce_get_price_suffix', 'wc_get_price_suffix_filter', 10, 2 );

//B2B Roller
add_role('bronze', __(
 'Bronze'),
 array(
 'read' => false, // Allows a user to read
 'create_posts' => false, // Allows user to create new posts
 'edit_posts' => false, // Allows user to edit their own posts
 )
);

add_role('sølv', __(
 'Sølv'),
 array(
 'read' => false, // Allows a user to read
 'create_posts' => false, // Allows user to create new posts
 'edit_posts' => false, // Allows user to edit their own posts
 )
);

add_role('guld', __(
 'Guld'),
 array(
 'read' => false, // Allows a user to read
 'create_posts' => false, // Allows user to create new posts
 'edit_posts' => false, // Allows user to edit their own posts
 )
);

add_role('platinum', __(
 'Platinum'),
 array(
 'read' => false, // Allows a user to read
 'create_posts' => false, // Allows user to create new posts
 'edit_posts' => false, // Allows user to edit their own posts
 )
);

Answer 1

Update 2

1) Your conditional function

First current_user_can() is not recommended to be used with user roles directly and can only have one capability (or in your case one user role) at the time…

Also in WooCommerce 3+ you will have to use WC()->customer->set_is_vat_exempt( true ); instead of WC()->customer->is_vat_exempt = true;

You are using a repetitive conditional function based on your special user roles 3 times. So I have set a custom conditional function that should work perfectly:

## The (repetitive) conditional function based on your "special" user roles 
function is_special_user_role(){
    if ( ! is_user_logged_in() ) return false;

    $user = wp_get_current_user(); // current user
    $user_roles = $user->roles; // It's always an array (as a user can have many roles)

    // HERE your defined user roles
    $defined_user_roles = array( 'bronze', 'sølv', 'guld', 'platinum' );

    if ( count( array_intersect( $user_roles, $defined_user_roles ) ) > 0 ) return true;
    else return false; // ==> Added update here
}

And (your others functions):

## Function that will check for user role and turn off VAT/tax for that role
add_action( 'template_redirect', 'wc_diff_rate_for_user', 1 );
function wc_diff_rate_for_user() {
    // check for the user role and set the customer object to have no VAT
    if ( is_special_user_role() )
        WC()->customer->set_is_vat_exempt( true ); // Updated HERE
}

## Function that filters the variable product hash based on user
add_filter( 'woocommerce_get_variation_prices_hash', 'wc_get_variation_prices_hash_filter', 1, 3 );
function wc_get_variation_prices_hash_filter( $hash, $item, $display ) {
    // check for the user role and clear key 2, which is where taxes are
    if ( is_special_user_role() )
        $hash['2'] = array();

    return $hash; // return the hash
}

## Function that removes the price suffix (inc. Tax) from variable products based on role
add_filter( 'woocommerce_get_price_suffix', 'wc_get_price_suffix_filter', 10, 2 );
function wc_get_price_suffix_filter( $price_display_suffix, $item ) {
    // check for the user role return blank if it matches
    if ( is_special_user_role() )
        $price_display_suffix = '';

    return $price_display_suffix;
}

Code goes in function.php file of your active child theme (active theme or in any plugin file).

All code is tested and works.

---

2) For your user roles creation

Instead you could use the excellent and very complete User Role Editor (free) plugin, that will allow you to create user roles, fine tune and check their capabilities (for each created role).

For your user roles creation code, you should run it only once. I have revisited it, making some changes and compacted it.

## Special user roles creation ==> this should be runned just once!
function special_ser_role_creation(){
    // Your "Special" user roles slug / name pairs
    $special_roles_array = array(
        'bronze'   => __( 'Bronze' ),
        'sølv'     => __( 'Sølv' ),
        'guld'     => __( 'Guld' ),
        'platinum' => __( 'Platinum' ),
    );
    $roles_caps = array(
        'read'          => false, // Allows a user to read
        'create_posts'  => false, // Allows user to create new posts
        'edit_posts'    => false, // Allows user to edit their own posts
    );

    $existing_user_roles = array_keys( wp_roles()->get_names() );

    // Iterating through each user roles and create them
    foreach( $special_roles_array as $role_slug => $role_name ){
        // If user role doesn't exist yet we create it
        if (! in_array( $role_slug, $existing_user_roles) )
            add_role( $role_slug, $role_name, $roles_caps );
    }
}
// Run the function once (then comment it or remove it)
special_ser_role_creation();

Code goes in function.php file of your active child theme (active theme or in any plugin file).