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

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git-svn-id: http://svn.automattic.com/wordpress/trunk@17883 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
nacin 2011-05-12 03:06:03 +00:00
parent ed94bd035b
commit 70a4181fc7
2 changed files with 41 additions and 0 deletions
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32
wp-includes/post-thumbnail-template.php
View File

@ -47,6 +47,36 @@ function the_post_thumbnail( $size = 'post-thumbnail', $attr = '' ) {
echo get_the_post_thumbnail( null, $size, $attr ); echo get_the_post_thumbnail( null, $size, $attr );
} }
/**
* 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. * Retrieve Post Thumbnail.
* *
@ -62,6 +92,8 @@ function get_the_post_thumbnail( $post_id = null, $size = 'post-thumbnail', $att
$size = apply_filters( 'post_thumbnail_size', $size ); $size = apply_filters( 'post_thumbnail_size', $size );
if ( $post_thumbnail_id ) { 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 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 ); $html = wp_get_attachment_image( $post_thumbnail_id, $size, false, $attr );
do_action( 'end_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size ); do_action( 'end_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size );
} else { } else {

9
wp-includes/query.php
View File

@ -1257,6 +1257,15 @@ class WP_Query {
*/ */
var $query_vars_changed = true; var $query_vars_changed = true;
/**
* Set if post thumbnails are cached
*
* @since 3.2
* @access public
* @var bool
*/
var $thumbnails_cached = false;
/** /**
* Resets query flags to false. * Resets query flags to false.
* *