Ticket #4304: category_exclusion_fix.patch

link-template.php

@@ -286 +286 @@
                 $join .= ')';
         }
 
-        $sql_exclude_cats = '';
+        $posts_in_ex_cats_sql = '';
         if ( !empty($excluded_categories) ) {
-                $blah = explode(' and ', $excluded_categories);
-                foreach ( $blah as $category ) {
+                $excluded_category_list = explode(' and ', $excluded_categories);
+        $sql_cat_ids = '';
+                foreach ( $excluded_category_list as $category ) {
                         $category = intval($category);
-                        $sql_cat_ids = " OR pc.category_ID = '$category'";
+            if ($category > 0) {
+                $sql_cat_ids .= " OR pc.category_ID = '$category'";
+            }
                 }
                 $posts_in_ex_cats = $wpdb->get_col("SELECT p.ID FROM $wpdb->posts p LEFT JOIN $wpdb->post2cat pc ON pc.post_id=p.ID WHERE 1 = 0 $sql_cat_ids GROUP BY p.ID");
                 $posts_in_ex_cats_sql = 'AND ID NOT IN (' . implode($posts_in_ex_cats, ',') . ')';
@@ -323 +326 @@
                 $join .= ')';
         }
 
-        $sql_exclude_cats = '';
+        $posts_in_ex_cats_sql = '';
         if ( !empty($excluded_categories) ) {
-                $blah = explode(' and ', $excluded_categories);
-                foreach ( $blah as $category ) {
+                $excluded_category_list = explode(' and ', $excluded_categories);
+        $sql_cat_ids = '';
+                foreach ( $excluded_category_list as $category ) {
                         $category = intval($category);
-                        $sql_cat_ids = " OR pc.category_ID = '$category'";
+            if ($category > 0) {
+                $sql_cat_ids .= " OR pc.category_ID = '$category'";
+            }
                 }
                 $posts_in_ex_cats = $wpdb->get_col("SELECT p.ID from $wpdb->posts p LEFT JOIN $wpdb->post2cat pc ON pc.post_id = p.ID WHERE 1 = 0 $sql_cat_ids GROUP BY p.ID");
                 $posts_in_ex_cats_sql = 'AND ID NOT IN (' . implode($posts_in_ex_cats, ',') . ')';