Changeset 17883 for trunk/wp-includes/post-thumbnail-template.php

Timestamp:

05/12/2011 03:06:03 AM (13 years ago)

Author:

nacin

Message:

Cache post thumbnails in the loop. props garyc40, scribu, greuben. fixes #15447.

File:

• trunk/wp-includes/post-thumbnail-template.php (modified) (2 diffs)

trunk/wp-includes/post-thumbnail-template.php

@@ -49 +49 @@
 
 /**
+ * Update cache for thumbnails in the current loop
+ *
+ * @sicne 3.2
+ */
+function update_post_thumbnail_cache() {
+    global $wp_query;
+
+    if ( $wp_query->thumbnails_cached )
+        return;
+
+    $thumb_ids = array();
+    foreach ( $wp_query->posts as $post ) {
+        if ( $id = get_post_thumbnail_id( $post->ID ) )
+            $thumb_ids[] = $id;
+    }
+
+    if ( ! empty ( $thumb_ids ) ) {
+        get_posts( array(
+                'update_post_term_cache' => false,
+                'include' => $thumb_ids,
+                'post_type' => 'attachment',
+                'post_status' => 'inherit',
+                'nopaging' => true
+        ) );
+    }
+
+    $wp_query->thumbnails_cached = true;
+}
+
+/**
  * Retrieve Post Thumbnail.
  *
@@ -63 +93 @@
     if ( $post_thumbnail_id ) {
         do_action( 'begin_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size ); // for "Just In Time" filtering of all of wp_get_attachment_image()'s filters
+        if ( in_the_loop() )
+            update_post_thumbnail_cache();
         $html = wp_get_attachment_image( $post_thumbnail_id, $size, false, $attr );
         do_action( 'end_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size );