Changeset 7074 for trunk/wp-includes/post.php

Timestamp:

02/27/2008 11:28:18 PM (17 years ago)

Author:

ryan

Message:

Introduce get_post_ancestors(). Add current_page_ancestor class to ancestors of the current page. Props AaronCampbell. fixes #5662

File:

• trunk/wp-includes/post.php (modified) (3 diffs)

trunk/wp-includes/post.php

@@ -176 +176 @@
     }
 
+    // Populate the ancestors field.
+    // Not cached since we don't clear cache for ancestors when a post changes.
+    _get_post_ancestors($_post);
+
     $_post = sanitize_post($_post, $filter);
 
@@ -189 +193 @@
         return $_post;
     }
+}
+
+/**
+ * get_post_ancestors() - Retrieve ancestors for a post
+ *
+ * @package WordPress
+ * @subpackage Post
+ * @since 2.5
+ *
+ * @param string $field {@internal Missing Description}}
+ * @param int|object &$post post ID or post object
+ * @return array of ancestor IDs
+ */
+function get_post_ancestors($post) {
+    $post = get_post();
+
+    if ( !empty($post->ancestors) )
+        return $post->ancestors;
+
+    return array();
 }
 
@@ -2885 +2909 @@
 }
 
+//
+// Private
+//
+
+function _get_post_ancestors(&$_post) {
+    global $wpdb;
+
+    if ( !empty($_post->ancestors) )
+        return;
+ 
+    $_post->ancestors = array();
+
+    if ( empty($_post->post_parent) || $_post->ID == $_post->post_parent )
+        return;
+
+    $id = $_post->ancestors[] = $_post->post_parent;
+    while ( $ancestor = $wpdb->get_var("SELECT `post_parent` FROM $wpdb->posts WHERE ID= '{$id}' LIMIT 1") ) {
+        if ( $id == $ancestor )
+            break;
+        $id = $_post->ancestors[] = $ancestor;
+    }
+}
+
 ?>