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1. nathan12343
   Member
   Posted 2 years ago #

   I've got a set up of 3 tiers of pages in the site structure. A bit like this:

   • Home
   • Category
     • Section
       • Page of content
       • Another page of content
     • Another section
       • More content
   • Category 2
     • A section in here
       • Even more pages

   I've got a link at the bottom of the pages of content to the next page. What I want to do is to bridge the gap between the sections and also the categories. So when you get to the bottom of "Another page of content" you get a link to go to "More content". Also at the bottom of "More content" there is a link to "Even more pages". Effectively all of the grandchildren pages.

   This is what I'm using for the "Next" link within the same parent:

   <?php
   $pagelist = get_pages('sort_column=menu_order&sort_order=asc&child_of='.$post->post_parent);
   $pages = array();
   foreach ($pagelist as $page) {
      $pages[] += $page->ID;
   }
   
   $current = array_search($post->ID, $pages);
   $nextID = $pages[$current+1];
   $nexttitle = get_the_title($nextID);
   ?>
   <?php if (!empty($nextID)) { ?>
   Next: <a href="<?php echo get_permalink($nextID); ?>"><?php echo $nexttitle ?></a>
   <?php } ?>

   This is a bit long winded, I hope it makes sense - I hope someone can help me!! Thanks.

2. nathan12343
   Member
   Posted 2 years ago #

   I've been doing a lot of digging and found that I can have parent=0 as an argument to get all of the top level pages. So I figured that if I collect all of the top level pages I can those as includes for the child_of arguement to get the second level. Then pass this into my final get_pages() as child_of to replace .$post->pages to give me all of the third levels.

   e.g.
   

   $firsttier = get_pages('parent=0');
   $secondtier = get_page('child_of=' .$firsttier):
   $pagelist = get_pages('sort_column=menu_order&sort_order=asc&child_of='.$secondtier);
   
   $pages = array();
   foreach ($pagelist as $page) {
      $pages[] += $page->ID;
   }

   But this doesn't work.

   Can anyone see where I'm going wrong?

3. brockangelo
   Member
   Posted 2 years ago #

   I would double check that the return values are returning what you are expecting. Do a print_r on both of your variables to see what it is returning. like: print_r($secondtier).

   Here is what I came up with. Let me know if it helps. A word of caution, this loads all top three levels of pages into memory, so it goes dreadfully slow on our intranet (2,000+ pages):

   <?php 
   
   $first_tier = get_pages('parent=0');
   $second_tier = array();
   $third_tier = array();
   
   foreach ($first_tier as $first_tier_page) {
      $second_tier = get_pages('child_of'.$first_tier_page->ID);
      foreach ($second_tier as $second_tier_page) {
   		$third_tier = get_pages('child_of'.$second_tier_page->ID);
   		}
   	}
   
   	$id = $third_tier[0];
   	echo get_the_title($id);
   
   ?>

   I put a sample call at the end of how to fetch a title. Good luck!

4. nathan12343
   Member
   Posted 2 years ago #

   Hi brockangelo,

   Really appreciate you looking into this. The first tier bit worked a charm (only returned the top level, but unfortunately second tier threw everything back, as did the third tier.

   I added 'child_of=0' to the first tier code. I tried changing 'child_of' to 'parent' but this didn't seem to have any impact.

   I've got a really ugly work around going but would love to get this sussed properly!

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