[Closed] Previous / Next within parent/child relationship

[Author]

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[alexd-6]

Hey - in my code if i in first Item - it shows in paginationprev child from other Parent. Here is my code and URL where you can see it:

hidden link

// Add Pagination Shortcode
function paginationprev() {
$next_post = wpv_child(1, 'projekt', 'objekt');
// $previous_post = wpv_child(-1, 'projekt', 'objekt');
// $prev_pagination= '';
$next_pagination = '';

if($next_post ){

$next_pagination = "<div class='previousnav'> << ".get_the_title($next_post->ID)."</div>";
}

//$pagination = "zurück >";

return '<div class="objektpagination">'.$next_pagination;

}
add_shortcode( 'paginationprev', 'paginationprev' );

### Child Navigation ###
// Add Pagination Shortcode
function paginationnext() {
//$next_post = wpv_child(1, 'projekt', 'objekt');
$previous_post = wpv_child(-1, 'projekt', 'objekt');
$prev_pagination= '';
//$next_pagination = '';

if($previous_post){
$prev_pagination = "<div class='nextnav'> ".get_the_title($previous_post->ID)." >> </div>";
}

//$pagination = "zurück >";

return $prev_pagination.'</div>';

}
add_shortcode( 'paginationnext', 'paginationnext' );

function wpv_child($step, $parentslug, $childslug) {
global $post;
$parent = get_post_meta($post->ID, '_wpcf_belongs_' . $parentslug
. '_id', true);
$children = get_posts(array('post_type' => $childslug, 'meta_key' => '_wpcf_belongs_' . $parentslug . '_id', 'meta_value' => $parent, 'numberposts' => -1));
$i = 0;
foreach ($children as $i => $child) {
if ($child->ID == $post->ID) break;
}
$i += $step;
if (isset($children[$i])) return $children[$i];
}
/code>

can you help me again?

thx and best regards - alex

[Christian Cox]

Hello alexd-6, I have split your question into a separate ticket so we can follow up in more detail. Just to be clear, is this site using the new post relationships system, or legacy relationships? From wp-admin, go to Toolset > Relationships. You should see a page with a message about your site containing legacy relationships if you have not yet converted to the new relationships system. On the other hand, if you have converted to the new relationships system, you should see a dashboard with a list of post relationships, just like you see a list of posts at wp-admin > Posts > All Posts.

Which do you see?