How to get grandparent page in classes.php?

  • $current = $page->ID;
$parent = $current->post_parent;
$grandparent = $parent->post_parent;

    $current displays the page ID just fine, but $parent and $grandparent are empty. Yes, I checked it on grandchildren pages.

Viewing 5 replies - 1 through 5 (of 5 total)

  • i’m trying to do something similar, this is what I had, but it gives me nothing:

    <?php
$parent = $post->post_parent;
$grandparent = $parent->post_parent;
echo $grandparent;
?>

    adding a get_post() seems to make it work:

    <?php
$current = $post->ID;
$parent = $post->post_parent;
$grandparent_get = get_post($parent);
$grandparent = $grandparent_get->post_parent;

echo 'current: '.$current.'<br />';
echo 'parent: '.$parent.'<br />';
echo 'grandparent: '.$grandparent;
?>

    Also, you can get the Root parent by adding this snippet to your functions.php:

    function get_root_parent($page_id) {
global $wpdb;
	$parent = $wpdb->get_var("SELECT post_parent FROM $wpdb->posts WHERE post_type='page' AND ID = '$page_id'");
	if ($parent == 0) return $page_id;
	else return get_root_parent($parent);
}

    then use this in your template:

    $root_parent = get_root_parent($post->ID);

    Thanks 2is3, this helped a lot when trying to get the root parent’s title.

    awesome – thanks 2is3!

    here’s my menu for the header – works nicely up to two levels of page depth (so children / grandchildren)

    i’m sure there’s a more efficient way to do this – but this works.

    <?php
$current = $post->ID;
$parent = $post->post_parent;
$haschildren = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$current."&amp;echo=0");
$grandparent_get = get_post($parent);
$grandparent = $grandparent_get->post_parent;

if ($grandparent != 0) {
  if ($grandparent) {
  $grandchildren = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$grandparent."&amp;echo=0");
  }
  else {
  $grandchildren = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$grandparent."&amp;echo=0");
  }
  if ($grandchildren &amp;&amp; is_page()) { ?>
<div class="submenu">
  <ul class="submenuul">
  <?php echo $grandchildren; ?>
  </ul>
</div>
<?php }
}

  if ($parent) {
  $children = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$parent."&amp;echo=0");
  }
  else {
  $children = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$current."&amp;echo=0");
  }
  if ($children &amp;&amp; is_page()) { ?>
<div class="submenu">
  <ul class="submenuul">
  <?php echo $children; ?>
  </ul>
</div>
<?php }

if ($haschildren != '' &amp;&amp; $parent != '0' &amp;&amp; $grandparent == '0') {
  $morechildren = wp_list_pages("depth=1&amp;title_li=&amp;child_of=".$current."&amp;echo=0");
  }
  if ($morechildren &amp;&amp; is_page()) { ?>
<div class="submenu">
  <ul class="submenuul">
  <?php echo $morechildren; ?>
  </ul>
</div>
<?php }
?>
Viewing 5 replies - 1 through 5 (of 5 total)
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