[wp-hackers] Children template?

[Simon Blackbourn]

>
> Currently... we can create "page-slug.php" or "page-id.php" to apply a
> template to a page automatically.   How can I do...
> "page-slug-children.php"  or "page-id-children.php" to auto-apply the
> template to all children?
>
>

I had a similar situation to you, I needed to initially apply a template to
all existing child pages, then I also wanted to override the template chosen
on the page edit screen to ensure the correct one is always applied.

To apply a template to all children of a particular page, run the following
code just once then remove it:


$pages = get_posts( array(
                        'post_type'   => 'page',
                        'post_parent' => 49
                        ));

if ( $pages ) {
    foreach ( $pages as $page ) {
        update_post_meta( $page->ID, '_wp_page_template',
'page-my-template.php' );
    }
}


And to auto-apply a particular template to certain child pages:


add_action( 'save_post', 'apply_my_template', 10, 2 );

function apply_my_template( $postID, $post ) {

    if (
        !current_user_can( 'edit_post', $postID )
        || 'page' != $post->post_type
        || wp_is_post_revision( $postID )
        || wp_is_post_autosave( $postID )
        || 'auto-draft' == $post->post_status
        || 'trash' == $post->post_status
        )
        return $postID;

    if ( 49 == $post->post_parent )
        update_post_meta( $postID, '_wp_page_template',
'page-my-template.php' );

}


HTH
Simon