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1. WebFlair
   Member
   Posted 5 months ago #

   I use the following code to display sub categories with category pages on my site, I have categories set up as counties of the UK...

   <?php if (is_category()) {
     $this_category = get_category($cat);
     if (get_category_children($this_category->cat_ID) != "") {
   echo "<div class=\"countysubs\"><h2>Counties</h2>";
       echo "<ul>";
       wp_list_categories('orderby=id&show_count=0&title_li=
   &use_desc_for_title=1&child_of='.$this_category->cat_ID);
       echo "</ul></div>";
   
     }
   } ?>

   However, I now want to use a hierarchical custom taxonomy to categorise posts by county, and so I am wondering how I can change the above code so that it can be used for a custom taxonomy.

   I have searched everywhere and cannot find a solution, can anone here help?

2. WebFlair
   Member
   Posted 5 months ago #

   Anybody able to help with this?

3. Colin Murphy
   Member
   Posted 5 months ago #

   I have not tested this but I think this should work using get_term_children function.
   

   $taxonomyName = 'taxonomy_name'
   $terms = get_term_children($post->ID, $taxonomyName);
   echo '<ul>';
   foreach ($terms as $term) {
   	$term = get_term_by( 'id', $child, $taxonomyName );
   	echo '<li><a href="' . get_term_link( $term->name, $taxonomyName ) . '">' . $term->name . '</a></li>';
   }
   echo '</ul>';

   If its not working it might be to do with the $post->id which you could get the post id by using the get_queried_object_id in WP Query.

   $id = $wp_query->get_queried_object_id();
   $terms = get_term_children($id->term_id, $taxonomyName);

4. WebFlair
   Member
   Posted 5 months ago #

   That seems to produce a 500 server error, perhaps I am using it incorrectly.

5. WebFlair
   Member
   Posted 5 months ago #

   Here's a better description of my problem...

   On my wordpress site UK Holiday Parks I use categories as locations i.e. Regions and Counties

   I have the top level categories (regions) in the side bar and the sub categories on the archive.php template using the code below...

   <?php if (is_category()) {
   $this_category = get_category($cat);
   if (get_category_children($this_category->cat_ID) != "") {
   echo "<div class=\"countysubs\"><h2>Counties</h2>";
   echo "
   <ul>";
   wp_list_categories('orderby=id&show_count=0&title_li=
   &use_desc_for_title=1&child_of='.$this_category->cat_ID);
   echo "</ul>
   </div>";
   
   }
   } ?>

   I want to stop using categories for locations and use a hierarchical custom taxonomy instead.

   I have set up a the Taxonomy, and a know how to get top level categories for the custom taxonomy into the side bar, I just cannot seem to get sub categories from the custom taxonomy to show up in the archive.php template.

6. sjaved
   Member
   Posted 5 months ago #

   Hi Friends,

   I am new to wordpress plugin development. I want to create my plugin for directory listings which consists of categories and sub categories.

   Can u please give me any link for the tutorial that how to use my custom categories and posts.

   I shall be very thankfull to you.

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