comment_render
- Versions
- 4.6 – 6
comment_render($node, $cid = 0)
Code
modules/comment.module, line 711
<?php
function comment_render($node, $cid = 0) {
global $user;
$mode = $_GET['mode'];
$order = $_GET['order'];
$threshold = $_GET['threshold'];
$comments_per_page = $_GET['comments_per_page'];
$comment_page = $_GET['comment_page'];
$output = '';
if (user_access('access comments')) {
// Pre-process variables.
$nid = $node->nid;
if (empty($nid)) {
$nid = 0;
}
if (empty($mode)) {
$mode = $user->mode ? $user->mode : ($_SESSION['comment_mode'] ? $_SESSION['comment_mode'] : variable_get('comment_default_mode', 4));
}
if (empty($order)) {
$order = $user->sort ? $user->sort : ($_SESSION['comment_sort'] ? $_SESSION['comment_sort'] : variable_get('comment_default_order', 1));
}
if (empty($threshold)) {
$threshold = $user->threshold ? $user->threshold : ($_SESSION['comment_threshold'] ? $_SESSION['comment_threshold'] : variable_get('comment_default_threshold', 0));
}
$threshold_min = db_result(db_query('SELECT minimum FROM {moderation_filters} WHERE fid = %d', $threshold));
if (empty($comments_per_page)) {
$comments_per_page = $user->comments_per_page ? $user->comments_per_page : ($_SESSION['comment_comments_per_page'] ? $_SESSION['comment_comments_per_page'] : variable_get('comment_default_per_page', '50'));
}
$output .= "<a id=\"comment\"></a>\n";
if ($cid) {
// Single comment view.
$output .= '<form method="post" action="'. url('comment') ."\"><div>\n";
$output .= form_hidden('nid', $nid);
$result = db_query('SELECT c.cid, c.pid, c.nid, c.subject, c.comment, c.format, c.timestamp, c.name, c.mail, c.homepage, u.uid, u.name AS registered_name, u.picture, u.data, c.score, c.users FROM {comments} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.cid = %d AND c.status = 0 GROUP BY c.cid, c.pid, c.nid, c.subject, c.comment, c.format, c.timestamp, c.name, c.mail, u.picture, c.homepage, u.uid, u.name, u.picture, u.data, c.score, c.users', $cid);
if ($comment = db_fetch_object($result)) {
$comment->name = $comment->uid ? $comment->registered_name : $comment->name;
$output .= theme('comment_view', $comment, theme('links', module_invoke_all('link', 'comment', $comment, 1)));
}
if ((comment_user_can_moderate($node)) && $user->uid != $comment->uid && !(comment_already_moderated($user->uid, $comment->users))) {
$output .= '<div style="text-align: center;">'. form_submit(t('Moderate comment')) .'</div><br />';
}
$output .= '</div>' . form_token() . '</form>';
}
else {
// Multiple comment view
$query .= "SELECT c.cid as cid, c.pid, c.nid, c.subject, c.comment, c.format, c.timestamp, c.name , c.mail, c.homepage, u.uid, u.name AS registered_name, u.picture, u.data, c.score, c.users, c.thread FROM {comments} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.nid = %d AND c.status = 0";
$query .= ' GROUP BY c.cid, c.pid, c.nid, c.subject, c.comment, c.format, c.timestamp, c.name, c.mail, u.picture, c.homepage, u.uid, u.name, u.picture, u.data, c.score, c.users, c.thread';
/*
** We want to use the standard pager, but threads would need every
** comment to build the thread structure, so we need to store some
** extra info.
**
** We use a "thread" field to store this extra info. The basic idea
** is to store a value and to order by that value. The "thread" field
** keeps this data in a way which is easy to update and convenient
** to use.
**
** A "thread" value starts at "1". If we add a child (A) to this
** comment, we assign it a "thread" = "1.1". A child of (A) will have
** "1.1.1". Next brother of (A) will get "1.2". Next brother of the
** parent of (A) will get "2" and so on.
**
** First of all note that the thread field stores the depth of the
** comment: depth 0 will be "X", depth 1 "X.X", depth 2 "X.X.X", etc.
**
** Now to get the ordering right, consider this example:
**
** 1
** 1.1
** 1.1.1
** 1.2
** 2
**
** If we "ORDER BY thread ASC" we get the above result, and this is
** the natural order sorted by time. However, if we "ORDER BY thread
** DESC" we get:
**
** 2
** 1.2
** 1.1.1
** 1.1
** 1
**
** Clearly, this is not a natural way to see a thread, and users
** will get confused. The natural order to show a thread by time
** desc would be:
**
** 2
** 1
** 1.2
** 1.1
** 1.1.1
**
** which is what we already did before the standard pager patch. To
** achieve this we simply add a "/" at the end of each "thread" value.
** This way out thread fields will look like depicted below:
**
** 1/
** 1.1/
** 1.1.1/
** 1.2/
** 2/
**
** we add "/" since this char is, in ASCII, higher than every number,
** so if now we "ORDER BY thread DESC" we get the correct order. Try
** it, it works ;). However this would spoil the "ORDER BY thread ASC"
** Here, we do not need to consider the trailing "/" so we use a
** substring only.
*/
if ($order == 1) {
if ($mode == 1 || $mode == 2) {
$query .= ' ORDER BY c.timestamp DESC';
}
else {
$query .= ' ORDER BY c.thread DESC';
}
}
else if ($order == 2) {
if ($mode == 1 || $mode == 2) {
$query .= ' ORDER BY c.timestamp';
}
else {
/*
** See comment above. Analysis learns that this doesn't cost
** too much. It scales much much better than having the whole
** comment structure.
*/
$query .= ' ORDER BY SUBSTRING(c.thread, 1, (LENGTH(c.thread) - 1))';
}
}
// Start a form, for use with comment control and moderation.
$result = pager_query($query, $comments_per_page, 0, "SELECT COUNT(*) FROM {comments} WHERE status = 0 AND nid = %d", $nid);
if (db_num_rows($result) && (variable_get('comment_controls', 3) == 0 || variable_get('comment_controls', 3) == 2)) {
$output .= '<form method="post" action="'. url('comment') ."\"><div>\n";
$output .= theme('comment_controls', $threshold, $mode, $order, $comments_per_page);
$output .= form_hidden('nid', $nid);
$output .= '</div>' . form_token() . '</form>';
}
$output .= '<form method="post" action="'. url('comment') ."\"><div>\n";
$output .= form_hidden('nid', $nid);
while ($comment = db_fetch_object($result)) {
$comment = drupal_unpack($comment);
$comment->name = $comment->uid ? $comment->registered_name : $comment->name;
$comment->depth = count(explode('.', $comment->thread)) - 1;
if ($mode == 1) {
$output .= theme('comment_flat_collapsed', $comment, $threshold_min);
}
else if ($mode == 2) {
$output .= theme('comment_flat_expanded', $comment, $threshold_min);
}
else if ($mode == 3) {
$output .= theme('comment_thread_min', $comment, $threshold_min);
}
else if ($mode == 4) {
$output .= theme('comment_thread_max', $comment, $threshold_min);
}
}
// Use the standard pager; $pager_total is the number of returned rows,
// is global and defined in pager.inc.
if ($pager = theme('pager', NULL, $comments_per_page, 0, array('comments_per_page' => $comments_per_page))) {
$output .= $pager;
}
if (db_num_rows($result) && comment_user_can_moderate($node)) {
$output .= '<div id="comment-moderation-button">'. form_submit(t('Moderate comments')) .'</div>';
}
$output .= '</div>' . form_token() . '</form>';
if (db_num_rows($result) && (variable_get('comment_controls', 3) == 1 || variable_get('comment_controls', 3) == 2)) {
$output .= '<form method="post" action="'. url('comment') ."\"><div>\n";
$output .= theme('comment_controls', $threshold, $mode, $order, $comments_per_page);
$output .= form_hidden('nid', $nid);
$output .= '</div>' . form_token() . '</form>';
}
}
// If enabled, show new comment form.
if (user_access('post comments') && node_comment_mode($nid) == 2 && variable_get('comment_form_location', 0)) {
$output .= theme('comment_form', array('nid' => $nid), t('Post new comment'));
}
}
return $output;
}
?>