This looks just like what I need for my site, but it doesn’t seem to be working for me.

I have the following code in my header.php:

<?php if ( (is_page('Sabah, BorneoSabah, Borneo')) || (is_child('Sabah, BorneoSabah, Borneo')) ): ?>


I know it’s not very pretty, but I’m new to all this. The problem is the menu displays on the parent page but not the children page.

When I use ‘array’ within ‘is_page’ and list all the page names manually it works, but obviously that is not the best solution to my problem.

Could you point me in the right direction to fix my problem please?

Thanks,
Jemma

Thanks for the help, I was looking all over for this and your is_child plugin saved me a lot of work. I’m pretty new to PHP and always looking for any help I can get. I was surprised how hard it was to tell WordPress to show content on the About and page and all the About page’s children. Why is it so hard? Why did you have to write so much code in is_child to make that work.

Here is the function I added to my custom-functions.php:

function about_menu() {
  if (( is_page('about')) || (is_child('about'))){
    wp_nav_menu( array( 'container_class' => 'about-menu',
                        'theme_location' => 'about' ) );
  }
}
add_action('thesis_hook_after_header','about_menu');

This of course makes sense to me, but without your is_child in there, is there anyway else you could do it in WordPress? Seems silly that this is not built into their list of conditionals.

Thanks again,
JK

1. install and activate the plugin. Note that this won’t change your theme’s functions.php in any way.
2. use the function is_child where ever you want to make sure that the current post/page is a descendant of the given parent post/page.

Say, you’ve got a page with the ID 4711 and another page with the ID 4712 where the latter is a child page of the first one. The function call is_child(4711) will evaluate to true if you’re requesting any of this page’s sub pages, e.g. the one with the ID 4712.

Do I need to add this…

function is_child($parent) {
global $post;
return $post->post_parent == $parent;
}

to my functions.php or not? I’ve seen it implemented around the web “Most of the time it’s something like the following:” not clear!

can you give an example of how to call this function would it be added to the (list item) of the subpage or to the (list item) that holds the subpages? not clear

Installing this plug-in didn’t seem to change my themes functions.php was it supost to? help!