wp_list_categories() WITH current_cat_ancestor

WordPress have a ”bug”. It doesn’t add a current_cat_ancestor class to the wp_list_pages function. If you need it, you can use the code below.

function wp_list_categories2($args = '')
{
global $cat;
if($args == '')
$wp_list_categories = wp_list_categories();
else
$wp_list_categories = wp_list_categories($args);

$cat_id_cut1 = explode('cat-item-', $wp_list_categories);

for($i=1; $i&lt;sizeof($cat_id_cut1); $i++)
{
$cat_id_cut2 = explode('"&gt;&lt;a', $cat_id_cut1[$i]);
$category_id_array[] = $cat_id_cut2[0];
}

for($i=0; $i&lt;sizeof($category_id_array); $i++)
{
if(is_numeric($category_id_array[$i]))
{
if(cat_is_ancestor_of( $category_id_array[$i], $cat))
{
$wp_list_categories = str_replace($category_id_array[$i], $category_id_array[$i] . ' current-cat-ancestor', $wp_list_categories);
}
}
}
return $wp_list_categories;
}

6 replys to “wp_list_categories() WITH current_cat_ancestor”

adam
2010-05-17 @ 1:50 f m
hi – where do you put this script? what file? thx
Reply
- admin »
  2010-05-17 @ 4:05 e m
  functions.php is the best place to put it, in your theme folder.
  Reply
Phil
2010-05-17 @ 3:06 f m
Jens – thanks for this post! saved me some time.

the only note is that your less than and angle brackets are escaped in the code above.

eg: $i<sizeof($cat_id_cut1)
Reply
- Phil
  2010-05-17 @ 3:07 f m
  ok – hilarious — i should have escaped the escaped code example, but you get my point.
  Reply
Ben
2010-06-01 @ 7:50 e m
maybe you can help with this: how do I get a parent-cat class added in to all categories that have children in the normal wp_list_categories. This above code works well when on a child page, but can you help with how to simply add the parent-cat class? Trying to do it as a filter but have VERY limited php knowledge. Thanks!
Reply
Mike
2010-07-01 @ 4:03 e m
I put the code in my functions.php file, then got this error: syntax error, unexpected ‘;’, expecting ‘)’

The error is in the line Phil is referring to above.

I changed the ”less than” HTML entity to ”<", and the error went away, but the function did nothing.

Any suggestions?

Thanks in advance for any help. This is an essential function!
Reply