[Resolved] Apply element to all children pages of children pages with snippet

[Max]

Hi there!

I have an element that I want to apply to all children of a page.

I managed that by creating a snippet:

`add_filter( ‘generate_element_display’, function( $display, $element_id ) {
global $post;

// Adds header-without-menu to all children of [Checkout]
if ( 12345 === $element_id && ( is_page() && $post->post_parent == ‘67890’ ) ) {
$display = true;

This works great, but I noticed that children of those children pages don’t have the element.

Is there a way to modify this snippet so that the element also shows on all the children of children?

Thanks!

[Ying]

Hi Max,

Try this:

add_filter( 'generate_element_display', function( $display, $element_id ) {
	global $post;
	$child_pages = get_pages(
    array(
	'child_of' => 67890,
	   )
    );
    $child_pages_ids = wp_list_pluck( $child_pages, 'ID' );

    if ( 12345 === $element_id && ( is_page($child_pages_ids)) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

[Max]

Thanks a lot, snippet seems to work well!

Is there a clean way to do this for multiple children pages?

I’m currently using this: https://jmp.sh/u8kmnMk

How do I change the code so that it works like the snippet you provided? Do I simply repeat everything between the first & last line?

add_filter( 'generate_element_display', function( $display, $element_id ) {
	global $post;
	$child_pages = get_pages(
    array(
	'child_of' => 77777,
	   )
    );
    $child_pages_ids = wp_list_pluck( $child_pages, 'ID' );

    if ( 88888 === $element_id && ( is_page($child_pages_ids)) ) {
        $display = true;
    }

    return $display;
	global $post;
	$child_pages = get_pages(
    array(
	'child_of' => 55555,
	   )
    );
    $child_pages_ids = wp_list_pluck( $child_pages, 'ID' );

    if ( 66666 === $element_id && ( is_page($child_pages_ids)) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

Or is it better to just use the add_filters on top of each other?

add_filter( 'generate_element_display', function( $display, $element_id ) {
	global $post;
	$child_pages = get_pages(
    array(
	'child_of' => 77777,
	   )
    );
    $child_pages_ids = wp_list_pluck( $child_pages, 'ID' );

    if ( 88888 === $element_id && ( is_page($child_pages_ids)) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

add_filter( 'generate_element_display', function( $display, $element_id ) {
	global $post;
	$child_pages = get_pages(
    array(
	'child_of' => 55555,
	   )
    );
    $child_pages_ids = wp_list_pluck( $child_pages, 'ID' );

    if ( 66666 === $element_id && ( is_page($child_pages_ids)) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

[David]

Hi there,

if for each Child Page, you’re wanting to display a different element then adding filters on top of each other makes the most sense.

[Max]

Ok, thanks!

[David]

You’re welcome

[Author]

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