[wp-hackers] Children template?

[Bryan Harley]

Thanks Simon!

On Tue, Feb 1, 2011 at 3:45 AM, Simon Blackbourn <piemanek at gmail.com> wrote:
>>
>> 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
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>