How do I validate extra field (ABN) for whole sale customer

I have a custom field (ABN) in my registration form for wholesale customer (Wholesale plugin – Wpexperts) https://amocanailsbeautysupply.com.au/wholesale-login/

To prevent duplicate ABN, (no customers should register the same ABN number in the database) there is control but if I have a custom field I created how can I check it? many thanks

add_filter( 'wpwholesale_registration_errors', 'validate_unique_abn', 10, 2 );
function validate_unique_abn( $errors, $sanitized_user_login ) {
    if ( isset( $_POST['abn'] ) && ! empty( $_POST['abn'] ) ) {
          $abn = sanitize_text_field( $_POST['abn'] );
          $existing_user = get_users( array(
                        'meta_key' => 'abn',
                         'meta_value' => $abn, 
                          'fields' => 'ID',
           ) );
  if ( ! empty( $existing_user ) ) {
     $errors->add( 'abn_error', __( 'This ABN is already registered. Please enter a unique ABN.', 'wpwholesale' ) );
   }
 }
return $errors;
}

• This topic was modified 1 year, 9 months ago by tothanhtuan.

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