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In comments_template(), don't run hierarchical queries if comment threading is disabled.

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When hierarchical=true, `WP_Comment_Query` will always fetch comments according
to the comment hierarchy, even if 'thread_comments' is disabled for the site.
This can cause problems when comment threading is disabled after threaded
comments have been recorded on the site; comments will no longer be returned in
a strictly chronological order.

We address the issue by refraining from querying hierarchically when comment
threading is disabled.

Props jmdodd.
Fixes #35378.

git-svn-id: https://develop.svn.wordpress.org/trunk@36226 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Boone Gorges
2016-01-08 22:16:11 +00:00
parent 5304745be0
commit 8dbc62d267
2 changed files with 59 additions and 11 deletions
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src/wp-includes/comment-template.php
+20 -11
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@@ -1286,11 +1286,16 @@ function comments_template( $file = '/comments.php', $separate_comments = false
'order' => 'ASC',
'status' => 'approve',
'post_id' => $post->ID,
'hierarchical' => 'threaded',
'no_found_rows' => false,
'update_comment_meta_cache' => false, // We lazy-load comment meta for performance.
);
if ( get_option('thread_comments') ) {
$comment_args['hierarchical'] = 'threaded';
} else {
$comment_args['hierarchical'] = false;
}
if ( $user_ID ) {
$comment_args['include_unapproved'] = array( $user_ID );
} elseif ( ! empty( $comment_author_email ) ) {
@@ -1336,18 +1341,22 @@ function comments_template( $file = '/comments.php', $separate_comments = false
$_comments = $comment_query->comments;
// Trees must be flattened before they're passed to the walker.
$comments_flat = array();
foreach ( $_comments as $_comment ) {
$comments_flat[] = $_comment;
$comment_children = $_comment->get_children( array(
'format' => 'flat',
'status' => $comment_args['status'],
'orderby' => $comment_args['orderby']
) );
if ( $comment_args['hierarchical'] ) {
$comments_flat = array();
foreach ( $_comments as $_comment ) {
$comments_flat[] = $_comment;
$comment_children = $_comment->get_children( array(
'format' => 'flat',
'status' => $comment_args['status'],
'orderby' => $comment_args['orderby']
) );
foreach ( $comment_children as $comment_child ) {
$comments_flat[] = $comment_child;
foreach ( $comment_children as $comment_child ) {
$comments_flat[] = $comment_child;
}
}
} else {
$comments_flat = $_comments;
}
/**