functions for right sidebar page in one-column

function twentyeleven_child_pagetemplates_body_classes( $wp_classes, $extra ){

  $classes = array();

  if( is_page_template( 'sidebar-page-right-in-one-column.php' ) ) :
  // correction for the Sidebar Template 'right sidebar on page in one-column layout'
    $classes[] = 'right-sidebar';
    $classes[] = 'two-column';
    $blacklist = array('one-column','content','left-sidebar','singular');
    // Filter the body classes
    foreach( $blacklist as $val ) {
      if (!in_array($val, $wp_classes)) : continue;
      else:
      foreach($wp_classes as $key => $value) {
        if ($value == $val) unset($wp_classes[$key]);
      }
      endif;
    }
  endif;

return array_merge($wp_classes, (array) $extra, $classes );
}

add_filter( 'body_class', 'twentyeleven_child_pagetemplates_body_classes', 20, 2 );