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Allow defining the number of revisions to save. Props mdawaffe. see #6775 

git-svn-id: http://svn.automattic.com/wordpress/trunk@7987 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2008-05-23 15:27:56 +00:00
parent 58e47dcb4a
commit 81a8e065c6
1 changed files with 32 additions and 3 deletions
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35
wp-includes/post.php
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@ -3018,6 +3018,7 @@ function wp_save_revision( $post_id ) {
if ( @constant( 'DOING_AUTOSAVE' ) )
return;
// WP_POST_REVISIONS = 0, false
if ( !constant('WP_POST_REVISIONS') )
return;
@ -3027,7 +3028,30 @@ function wp_save_revision( $post_id ) {
if ( !in_array( $post['post_type'], array( 'post', 'page' ) ) )
return;
return _wp_put_revision( $post );
$return = _wp_put_revision( $post );
// WP_POST_REVISIONS = true (default), -1
if ( !is_numeric( WP_POST_REVISIONS ) || WP_POST_REVISIONS < 0 )
return $return;
// all revisions and (possibly) one autosave
$revisions = wp_get_post_revisions( $post_id, array( 'order' => 'ASC' ) );
// WP_POST_REVISIONS = (int) (# of autasaves to save)
$delete = count($revisions) - WP_POST_REVISIONS;
if ( $delete < 1 )
return $return;
$revisions = array_slice( $revisions, 0, $delete );
for ( $i = 0; isset($revisions[$i]); $i++ ) {
if ( false !== strpos( $revisions[$i]->post_name, 'autosave' ) )
continue;
wp_delete_revision( $revisions[$i]->ID );
}
return $return;
}
/**
@ -3225,12 +3249,17 @@ function wp_delete_revision( $revision_id ) {
* @param int|object $post_id post ID or post object
* @return array empty if no revisions
*/
function wp_get_post_revisions( $post_id = 0 ) {
function wp_get_post_revisions( $post_id = 0, $args = null ) {
if ( !constant('WP_POST_REVISIONS') )
return array();
if ( ( !$post = get_post( $post_id ) ) || empty( $post->ID ) )
return array();
if ( !$revisions = get_children( array( 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit' ) ) )
$defaults = array( 'order' => 'DESC', 'orderby' => 'date' );
$args = wp_parse_args( $args, $defaults );
$args = array_merge( $args, array( 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit' ) );
if ( !$revisions = get_children( $args ) )
return array();
return $revisions;
}