sidebar.php

<?php
if ( ( is_single() || is_page() ) && 'et_full_width_page' === get_post_meta( get_queried_object_id(), '_et_pb_page_layout', true ) )
	return;
?>

<?php
if ( is_active_sidebar( 'sidebar-1' ) ) : ?>
	<div id="sidebar">
		
<?php
if (!is_search() && !is_404()) :

  if (!$post->post_parent) {
    $ancestor_title = get_post($post);
    $ancestor_title = $ancestor_title->post_title;

    if (DEBUG_STW == 1) :
      debugVar($ancestor_title, '$ancestor_title');
    endif;
  }

  if ($post->ancestors) {
    $ancestor_title = $post->ancestors;
    $ancestor_title = end($ancestor_title);
    $ancestor_title = get_the_title( $ancestor_title );

    if (DEBUG_STW == 1) :
      debugVar($ancestor_title, '$ancestor_title');
    endif;
  }

  if (!$post->post_parent){
    
    // will display the subpages of this top level page
    $args = array(
      'title_li'     => '',
      'child_of'     => $post->ID,
      'echo'         => 0,
      'sort_column'  => 'post_title'
    );
    $children = wp_list_pages($args);
    
    if (DEBUG_STW == 1) :
      debugVar($children);
    endif;

  } else {

    $ancestors = get_post_ancestors( $post->ID );
    
    if (DEBUG_STW == 1) :
      debugVar($ancestors);
    endif;

    $ancestors = end($ancestors);
    $args = array(
      'title_li'     => '',
      'child_of'     => $ancestors,
      'echo'         => 0,
      'sort_column'  => 'post_title'
    );
    $children = wp_list_pages($args);
    
    if (DEBUG_STW == 1) :
      debugVar($children);
    endif;

  }

  if (DEBUG_STW == 1) :
    debugVar($ancestor_title, "ancestor_title");
  endif;

  if ($children) { ?>

      <div id="sidebar-submenu" class="et_pb_widget widget_submenu">
          <h4 class="widgettitle"><?php echo $ancestor_title; ?></h4>
          <div class="textwidget">
            <ul class="list-group">
              <?php echo $children; ?>
            </ul>
          </div>
      </div>

  <?php
  }
  endif;
  ?>
      
      <?php dynamic_sidebar( 'sidebar-1' ); ?>
      
    </div> <!-- end #sidebar -->
    
<?php endif; //if (!is_search() && !is_404())?>