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display parent cat if child has posts (3 posts)

  1. TomK32
    Member
    Posted 8 years ago #

    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 = '';

  2. jwurster
    Member
    Posted 8 years ago #

    Could this code be modified to correctly total the child posts and display for the parent total instead of zero?

  3. nieuws
    Member
    Posted 8 years ago #

    You can also use the function in the coffee2code recent post plugin. Nice work though. :)

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