Enable Threaded Comments on Sandbox theme WordPress

Brian Richards answers:

Chad, I encountered this exact problem almost a year ago. My own framework is forked from Sandbox, let me fetch the code for you!

Quick answer while I patch it in to what you have: you need to use function wp_list_comments to handle the comment loop for you, and wrap your comment format in a function that is referenced by wp_list_comments. Same is true for trackbacks.

Here is your new code:

<div class="mainSplitter">&nbsp;</div>

<div class="commentBox">
<?php
if ( 'comments.php' == basename($_SERVER['SCRIPT_FILENAME']) )
die ( 'Please do not load this page directly. Thanks.' );
?>
<div id="comments">
<?php
if ( post_password_required() ) { ?>
<div class="nopassword"><?php _e( 'This post is protected. Enter the password to view any comments.', 'sandbox' ) ?></div>
</div><!-- .comments -->
<?php return; } ?>

<?php if ( have_comments() ) : ?>
<?php // Number of pings and comments
$ping_count = $comment_count = 0;
foreach ( $comments as $comment )
get_comment_type() == "comment" ? ++$comment_count : ++$ping_count;
if ( ! empty($comments_by_type['comment']) ) : ?>

<div id="comments-list" class="comments">
<h2>Join the Discussion</h2>

<ol class="commentlist">
<?php wp_list_comments('type=comment&callback=sandbox_comment'); ?>
</ol>

<div id="comments-nav-below" class="comment-navigation">
<div class="paginated-comments-links"><?php paginate_comments_links(); ?></div>
</div>

</div><!-- #comments-list .comments -->
<div class="cb"></div>
<?php endif; // REFERENCE: if ( $comment_count ) ?>
<?php if ( ! empty($comments_by_type['pings']) ) : ?>

<div id="trackbacks-list" class="comments">
<h2 class="trigger"><a href="#"><?php printf($ping_count > 1 ? __('<span>%d</span> Trackbacks', 'sandbox') : __('<span>One</span> Trackback', 'sandbox'), $ping_count) ?></a></h2>

<div class="toggle_container">
<div class="block">
<ul>
<?php wp_list_comments('type=pings&callback=sandbox_ping'); ?>
</ul>
</div>
</div>
</div><!-- #trackbacks-list .comments -->

<?php endif // REFERENCE: if ( $ping_count ) ?>
<?php endif // REFERENCE: if ( have_comments ) ?>

<div class="clear"></div>

<?php if ( 'open' == $post->comment_status ) { ?>
<?php $req = get_option('require_name_email'); // Checks if fields are required. Thanks, Adam. ;-) ?>
<div id="respond">
<h2><?php _e( 'Post a Comment', 'sandbox' ) ?></h2>
<?php if ( get_option('comment_registration') && !$user_ID ) { ?>
<p id="login-req">
<?php printf(__('You must be <a href="%s" title="Log in">logged in</a> to post a comment.', 'sandbox'),
get_bloginfo('wpurl') . '/wp-login.php?redirect_to=' . get_permalink() ) ?>
</p>
<?php } else { ?>
<div class="formcontainer">
<form id="commentform" action="<?php bloginfo('wpurl') ?>/wp-comments-post.php" method="post">

<?php if ( $user_ID ) { ?>
<p id="login"><?php
printf( __( '<span class="loggedin">Logged in as <a href="%1$s" title="Logged in as %2$s">%2$s</a>.</span> <span class="logout"><a href="%3$s" title="Log out of this account">Log out?</a></span>', 'sandbox' ),
get_bloginfo('wpurl') . '/wp-admin/profile.php',
wp_specialchars( $user_identity, 1 ),
get_bloginfo('wpurl') . '/wp-login.php?action=logout&amp;redirect_to=' . get_permalink() );
?>
</p>

<?php } else { ?>

<p id="comment-notes"><?php _e( 'Your email is never shared.', 'sandbox' ) ?> <?php if ($req) _e( 'Required fields are marked <span class="required">*</span>', 'sandbox' ) ?></p>

<div class="form-label"><label for="author"><?php _e( 'Name', 'sandbox' ) ?></label> <?php if ($req) _e( '<span class="required">*</span>', 'sandbox' ) ?></div>
<div class="form-input"><input id="author" name="author" class="text<?php if ($req) echo ' required'; ?>" type="text" value="<?php echo $comment_author ?>" size="30" maxlength="50" tabindex="3" /></div>

<div class="form-label"><label for="email"><?php _e( 'Email', 'sandbox' ) ?></label> <?php if ($req) _e( '<span class="required">*</span>', 'sandbox' ) ?></div>
<div class="form-input"><input id="email" name="email" class="text<?php if ($req) echo ' required'; ?>" type="text" value="<?php echo $comment_author_email ?>" size="30" maxlength="50" tabindex="4" /></div>

<div class="form-label"><label for="url"><?php _e( 'Website', 'sandbox' ) ?></label></div>
<div class="form-input"><input id="url" name="url" class="text" type="text" value="<?php echo $comment_author_url ?>" size="30" maxlength="50" tabindex="5" /></div>


<?php } ?>

<div class="form-label"><label for="comment"><?php _e( 'Comment', 'sandbox' ) ?></label></div>
<div class="form-textarea"><textarea id="comment" name="comment" class="text required" cols="45" rows="8" tabindex="6"></textarea></div>

<div class="form-submit"><input id="submit" name="submit" class="button" type="submit" value="<?php _e( '', 'sandbox' ) ?>" tabindex="7" /><input type="hidden" name="comment_post_ID" value="<?php echo $id ?>" /></div>


<div class="form-option"><?php do_action( 'comment_form', $post->ID ) ?></div>

</form><!-- #commentform -->
</div><!-- .formcontainer -->
<?php } ?>


</div>

<?php } ?>

</div> <!-- #comments /-->

</div> <!-- .commentBox /-->

<?php include ('sidebar-comment.php'); ?>

<div class="clear"></div>
<div class="mainSplitter_rev">&nbsp;</div>

<?php global $sandbox_comment_alt; ?>
<?php $sandbox_comment_alt = 0; ?>

<?php function sandbox_comment($comment, $args, $depth) {
$GLOBALS['comment'] = $comment;
$GLOBALS['comment_depth'] = $depth;
$i++;
?>
<li>
<div class="comment-author vcard"><?php echo get_avatar( $comment, 60 ); ?></div>
<div class="comment-name"><?php comment_author() ?></div>
<div class="comment-meta">
<?php // echo the comment reply link with help from Justin Tadlock http://justintadlock.com/ and Will Norris http://willnorris.com/
if($args['type'] == 'all' || get_comment_type() == 'comment') :
comment_reply_link(array_merge($args, array(
'reply_text' => __('Reply to this Comment','sandbox'),
'login_text' => __('Log in to reply.','sandbox'),
'depth' => $depth,
'before' => '<span class="comment-reply-link">',
'after' => '</span>'
)));
endif;
?>
<?php printf(__('%1$s at %2$s', 'sandbox'),
get_comment_date(),
get_comment_time(),
'#comment-' . get_comment_ID() );
edit_comment_link(__('', 'sandbox'), '', ''); ?>
</div>

<?php if ($comment->comment_approved == '0') {
_e("\t\t\t\t\t<span class='unapproved'>Your comment is awaiting moderation.</span>\n", 'sandbox');
} ?>

<?php comment_text() ?>
</li>
<?php } ?>

<?php function sandbox_ping($comment, $args, $depth) {
$GLOBALS['comment'] = $comment;
?>
<?php $sandbox_comment_alt = 0 ?>
<li>
<div class="comment-name"><?php printf(get_comment_author_link()) ; ?></div>
<div class="comment-meta"><?php printf(__('%1$s on %2$s', 'sandbox'),
get_comment_date(),
get_comment_time() );
edit_comment_link(__('', 'sandbox'), '', '</span>');
?>
</div>
<?php if ($comment->comment_approved == '0') {
_e('\t\t\t\t\t<span class="unapproved">Your trackback is awaiting moderation.</span>\n', 'sandbox');
}
?>
</li>
<?php } ?>


The two new functions at the end, sandbox_comment and sandbox_ping, could actually be anywhere (like functions.php, for instance). These are the callbacks that get referenced in your comment and trackback loops.

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