display parent cat if child has posts

if you use wp_list_cats() with hide_empty=1 empty parent categories will not be shown and also their children won’t be.

Below is a patch which changes this behaviour, you can see it in action on blog.tomk32.de where i have hide_empty=1


diff -u template-functions-category*
--- template-functions-category-tomk32.php 2005-08-31 09:48:10.000000000 +0200
+++ template-functions-category.php 2005-08-14 20:06:02.000000000 +0200
@@ -273,13 +273,12 @@
WHERE cat_ID > 0 $exclusions
ORDER BY $sort_column $sort_order";

- $categories = $wpdb->get_results($query);
+ $categories = $wpdb->get_results($query);
}
-
if (!count($category_posts)) {
$now = current_time('mysql', 1);
$cat_counts = $wpdb->get_results(" SELECT cat_ID,
- COUNT($wpdb->post2cat.post_id) AS cat_count, category_parent
+ COUNT($wpdb->post2cat.post_id) AS cat_count
FROM $wpdb->categories
INNER JOIN $wpdb->post2cat ON (cat_ID = category_id)
INNER JOIN $wpdb->posts ON (ID = post_id)
@@ -287,15 +286,10 @@
AND post_date_gmt < '$now' $exclusions
GROUP BY category_id");
if (! empty($cat_counts)) {
- foreach ($categories as $cat) {
- if (count_category_children($cat_counts, $cat->cat_ID) > 0) {
- $category_posts[$cat->cat_ID] = 0;
- }
- }
foreach ($cat_counts as $cat_count) {
- if( 1 != intval($hide_empty) || $cat_count > 0) {
- $category_posts["$cat_count->cat_ID"] = $cat_count->cat_count;
- }
+ if (1 != intval($hide_empty) || $cat_count > 0) {
+ $category_posts["$cat_count->cat_ID"] = $cat_count->cat_count;
+ }
}
}
}
@@ -395,19 +389,6 @@
echo apply_filters('list_cats', $thelist);
}

-
-function count_category_children(&$categories, $cat_id) {
- $result = 0;
- foreach ($categories as $cat) {
- if ($cat->category_parent == $cat_id) {
- $result += count_category_children($categories, $cat->cat_ID);
- $result += $cat->cat_count;
- }
- }
- return $result;
-}
-
-
function in_category($category) { // Check if the current post is in the given category
global $post, $category_cache;
$cats = '';