[Resolved] Display element on child pages

[Damiaan van Vliet]

Good morning team,
I’ve created a header element with different logo and I want to display it on a page and all child pages.
Of course I can add the pages through display rules but there are a lot of pages.
So I’ve tried the code from the article about “generate_element_display”. But it’s not working.
Parent page ID = 522
Element ID = 160
Code I’ve tried:

/* element different logo on page portfolio en sub pages */
add_filter( 'generate_element_display', function( $display, $element_id ) {
    global $post;
    if ( 160 === $element_id && 522 == $post->post_parent ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

Thanks!

[David]

Hi there,

try:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    
    if ( is_page() && 160 === $element_id ) {
        global $post;
        if ( 552 == $post->post_parent ) {
            $display = true;
        }
    }
    return $display;

}, 10, 2 );

[Damiaan van Vliet]

Hi David, thanks for reply but also does not work. Odd. I will give you login details.

[David]

I assume it is the Portfolio page ? If so the ID of that is 522

[Damiaan van Vliet]

Hi David,
Indeed portfolio = 522 and element post ID is indeed different, 607.

So I tried:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    global $post;
    if ( 607 === $element_id && 522 == $post->post_parent ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

and tried:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    
    if ( is_page() && 607 === $element_id ) {
        global $post;
        if ( 522 == $post->post_parent ) {
            $display = true;
        }
    }
    return $display;

}, 10, 2 );

but both did not work.

[David]

In your Element, does the Display Rules include the initial location ? ie. the Parent Page ?

[Damiaan van Vliet]

Hi David, I tried it with and without an initial location but does not matter. I will try (should have done first) to disable all unnecessary plugins and test again and come back to you later. That will be tomorrow.
Thanks for helping!

[Damiaan van Vliet]

David it works! Disabled all plug-ins (on the test site it were a lot) and cleared cache.
So thanks again for help.

[David]

Awesome – glad to hear that!

[Tina]

Hi David, I landed here by doing a search, I had the same problem but for me your comment “does the Display Rules include the initial location” did the trick – as soon as I selected the parent page as initial location, the filter started working. perhaps you could consider adding a note to that effect here for clarity?

[David]

Hi Tina,

glad to hear this worked for you.
I will get the doc updated to make that clearer

[David]

Doc has been updated! Thanks for the suggestion

[Tina]

Perfect, thanks David!

[Author]

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