Comments on: Great Grand Parent ID’s in WordPress

By: MadeGlobal

MadeGlobal — Mon, 11 Apr 2011 19:00:55 +0000

You can use the built in wordpress function get_post_ancestors too. This returns an array of the ID numbers of all of the posts who are ancestors to your current post. An example of use would be:

if (!$post->post_parent){
echo ‘We are not a child’;
} else {
$ancestors = get_post_ancestors($post);
foreach ($ancestors as $anc){
echo ‘Found an ancestor ID ‘.$anc;
echo ‘The post title is ‘.get_the_title($anc);
}
}

Hope that helps to shed some light…

Tim.

By: Loren Helgeson

Loren Helgeson — Wed, 16 Feb 2011 23:05:01 +0000

Thanks for sharing. I’ve been looking for a clean way to express this. I wish I’d found this three or even four WordPress projects back.

By: Rams

Rams — Tue, 16 Nov 2010 04:46:56 +0000

Hey , thanks for sharing.. im getting the idea I really going to need this. Just tell me what it does? lol.. im not quite sure what the code actually does when activated. Yes, Im new. Why would i need to find a grandparent? Would appreciate an explanation, cheers.

By: Sisir

Sisir — Mon, 11 Oct 2010 10:20:45 +0000

Thanks! vary handy code. Also like the recessive process.

By: @shimapi

@shimapi — Mon, 17 May 2010 16:56:15 +0000

Thanks a lot! this is really helpfull!!

By: frank

frank — Tue, 02 Mar 2010 18:44:58 +0000

I came up with a slight variation that outputs the parent or page title.

//get the root parent page title
function get_top_ancestor($id){
$current = get_post($id);
if(!$current->post_parent){
return $current->post_title;
} else {
return get_top_ancestor($current->post_parent);
}
}

SO, if you put teh above script into your function.php and the following into your body tag like this:

Now my page is wrapped in the slug name for the page. This is useful as a sort of ‘if” statement for CSS.
// If this is about page: the header background is blue
// If this is products page: the header background is red

.about .header{background-colour: blue;}
.about .header{background-colour: red;}

This can be done with the ID as you have it but it’s not as easy to read:
.about .10{background-color: blue;}

The problem with this ‘slug’ function is when I get to a child, grandChild or deeper. The slug returns the name of that page. : “blueberry” or “bran” and not Products, rendering the CSS background colour useless.

Thanks in advance for your thoughts.

By: Andy

Andy — Tue, 19 Jan 2010 22:54:43 +0000

Awesome function, Jesse. I’ll make sure I add that to my code snippets. Thanks for sharing!

By: Jesse

Jesse — Tue, 19 Jan 2010 13:08:15 +0000

Hey Andy, I’m not sure if you’re familiar with recursion, but just in case there is someone else that comes across this who would like to grab a top element, here’s a function I wrote after discovering that get_post_ancestors only recursed one parent (thus rendering it useless for my needs):

function get_top_ancestor($id){
$current = get_post($id);
if(!$current->post_parent){
return $current->ID;
} else {
return get_top_ancestor($current->post_parent);
}
}

this function will always return the parent, grandparent, or higher, closest to the top. Very good for submenus.