If parent X include page Y?

https://codex.www.ads-software.com/User:MichaelH/MyPlugins has reference to Plugin Name: Child Force Category Template that should do you…

Works for Parent/Child but not Parent/Child/Grandchild

Thanks.

So where do I put parent name/id?
(not that good with scripts)

I tried embedding it in archive.php, the I created a file named category-about.php containing my category template (parent category is named ‘About’). I also tried using the id for parent category to form the name (category-3.php).
No results.

<?php
/*
Plugin Name: Child Force Category Template
Plugin URI: https://www.ads-software.com/support/topic/234874
Description:
Author: MichaelH modified original from Mark Jaquith
Version: 0.0
Author URI:
*/

/* GPL goes here */

function child_force_category_template() {

    if ( !is_category() || is_404() ) return; // we only care about category views

    $cat = get_query_var('cat');
    $category = get_category ($cat);

    if ( !($category) ) return; // no category with which to work

        if ( file_exists(TEMPLATEPATH . '/category-' . $category->cat_ID . '.php') ) {
            include(TEMPLATEPATH . '/category-' . $category ->cat_ID . '.php');
            exit; }
        elseif ( file_exists(TEMPLATEPATH . '/category-' . $category->category_parent . '.php') ) {
            include(TEMPLATEPATH . '/category-' . $category->category_parent . '.php');
            exit; }
}
add_action('template_redirect', 'child_force_category_template');
?>

You don’t. This assumes if your Parent is category id = 15 then you have a template in your theme file called category-15.php that will be used to display posts that belong to category 15 and any ‘child’ categories of category 15.

See
Category Templates
Template Hierarchy

Tried that, didn’t work.

If my parent is id 3 I create a file called category-3.php and embedd the code I want to display.
I put the Child Force Category Template in archive.php and remove everything else for that file.

And…… nothing. Blank.

No, you save the Child Force Category as a plugin, in wp-content/plugins folder, then activate the plugin.

Oh… (blush).
It works.
Thank you for your patience.

One last question.
If I want to bypass the plugin on one page is it enough to just create a category page (say category-15.php) for that category?

All the plugin does is force the template for a child category to use the template of the parent category.

Ok