Topic Tag: Displaying post relationships

// Add Pagination Shortcode
    function pagination() {
    $next_post = wpv_child(1, 'exhibition', 'painting');
    $previous_post = wpv_child(-1, 'exhibition', 'painting');
    $prev_pagination= '';
    $next_pagination = '';
 
    if($previous_post ){
 
        $prev_pagination = "<div class='navigation'><div class='previousnav'> <a href='".get_permalink($previous_post->ID)."'> << ".get_the_title($previous_post->ID)."</a></div>";
    }
    if($next_post){
        $next_pagination = "<div class='nextnav'><a href='".get_permalink($next_post->ID)."'> ".get_the_title($next_post->ID).">></a></div>";
    }
 
$pagination = "<div class='currentexb'><a href='http://www.neilpinkett.co.uk/npwp/exhibition/''>GALLERY</a> >".get_the_title()."</div>";
 
 
return $prev_pagination.$pagination.$next_pagination;
 
}
add_shortcode( 'pagination', 'pagination' );
 
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];
}