[Resolved] Restrict pagination to children of a particular page

[George]

I have set a pagination template block element to only appear below children of a particular page:

add_filter( 'generate_block_element_display', function( $display, $element_id ) {
    global $post;

    if ( 11024234 === $element_id && ( is_page() && $post->post_parent == '11017715' ) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

Is it possible to restrict the pagination only to those child pages?

[Elvin]

Hi George,

Can you try this?

add_filter( 'generate_hook_element_display', function( $display, $element_id ) {
	
	$args = array( 'child_of' => 11017715, ); 
	$pages = get_pages($args); 
	$pageID = array();

	foreach($pages as $page){
		$pageID[] = $page->ID;
	}

	if ( 11024234 === $element_id && is_page($pageID) ) {
		$display = true;
	}

	return $display;
}, 20, 2 );

[George]

Thanks, Elvin, just tested it, it still includes some other random pages.

[David]

Hi George,

First off – does it work on the child pages it is meant to ?

[George]

Yes, it does, just like the code, I showed in my initial post. It’s just that navigating with previous, next will eventually show a page that is not a child of the stated parent.

[David]

Hmmm… i am not sure theres a solution for that, to best of my knowledge GP is using the get_next_post_link ( and get_prev ) functions for those links:

https://developer.wordpress.org/reference/functions/get_next_post_link/

Which doesn’t have any options in regards to page hierarchy.

I think you would need to create you won paging nav. Heres an example function that sounds like its doing the same thing:

https://gist.github.com/glueckpress/5477286

[George]

I managed to make it work with the code you provided, David. The only thing is that when I use gp130428_paginate_parent_children( 123 ) the pagination also includes the parent page. Is there a way to exclude the parent?

[David]

Line 37 looks to be where it outputs the Page parent title. Try replacing that line that with just a HTML Comment eg.

<!-- does nothing -->

See what happens 🙂

[George]

Yeah, I tried all that stuff, it didn’t work. Never mind, I will play some more with it and see what happens.

Thanks, David 🙂

[David]

No problems – hope you find a solution!

[Author]

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