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Add filters to *_metadata() functions. Props sc0ttkclark. Fixes #14766 

git-svn-id: http://svn.automattic.com/wordpress/trunk@15983 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
scribu 2010-10-26 19:11:27 +00:00
parent 57a7c073ef
commit f7bb6febeb
1 changed files with 23 additions and 1 deletions
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22
wp-includes/meta.php
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@ -45,6 +45,10 @@ function add_metadata($meta_type, $object_id, $meta_key, $meta_value, $unique =
// expected_slashed ($meta_key) // expected_slashed ($meta_key)
$meta_key = stripslashes($meta_key); $meta_key = stripslashes($meta_key);
$check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique );
if ( null !== $check )
return (bool) $check;
if ( $unique && $wpdb->get_var( $wpdb->prepare( if ( $unique && $wpdb->get_var( $wpdb->prepare(
"SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d", "SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d",
$meta_key, $object_id ) ) ) $meta_key, $object_id ) ) )
@ -108,6 +112,10 @@ function update_metadata($meta_type, $object_id, $meta_key, $meta_value, $prev_v
// expected_slashed ($meta_key) // expected_slashed ($meta_key)
$meta_key = stripslashes($meta_key); $meta_key = stripslashes($meta_key);
$check = apply_filters( "update_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $prev_value );
if ( null !== $check )
return (bool) $check;
if ( ! $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) ) ) if ( ! $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) ) )
return add_metadata($meta_type, $object_id, $meta_key, $meta_value); return add_metadata($meta_type, $object_id, $meta_key, $meta_value);
@ -180,6 +188,10 @@ function delete_metadata($meta_type, $object_id, $meta_key, $meta_value = '', $d
$meta_key = stripslashes($meta_key); $meta_key = stripslashes($meta_key);
$meta_value = maybe_serialize( stripslashes_deep($meta_value) ); $meta_value = maybe_serialize( stripslashes_deep($meta_value) );
$check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all );
if ( null !== $check )
return (bool) $check;
$query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key ); $query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key );
if ( !$delete_all ) if ( !$delete_all )
@ -231,6 +243,16 @@ function get_metadata($meta_type, $object_id, $meta_key = '', $single = false) {
if ( !$object_id = absint($object_id) ) if ( !$object_id = absint($object_id) )
return false; return false;
$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single );
if ( null !== $check ) {
if ( !is_array( $check ) )
return $check;
elseif ( $single )
return maybe_unserialize( $check[0] );
else
return array_map( 'maybe_unserialize', $check );
}
$meta_cache = wp_cache_get($object_id, $meta_type . '_meta'); $meta_cache = wp_cache_get($object_id, $meta_type . '_meta');
if ( !$meta_cache ) { if ( !$meta_cache ) {