comments.php

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<?php
use Elgg\Database\QueryBuilder;
use Elgg\Database\Clauses\OrderByClause;

$entity = elgg_extract('entity', $vars);
if (!$entity instanceof \ElggEntity) {
    return;
}

$show_add_form = elgg_extract('show_add_form', $vars, true);

$latest_first = elgg_comments_are_latest_first($entity);

$limit = elgg_extract('limit', $vars, get_input('limit', 0));
if (!$limit) {
    $limit = elgg_comments_per_page($entity);
}

$module_vars = [
    'id' => elgg_extract('id', $vars, 'comments'),
    'class' => elgg_extract_class($vars, 'elgg-comments'),
];

$options = [
    'type' => 'object',
    'subtype' => 'comment',
    'container_guid' => $entity->guid,
    'full_view' => true,
    'limit' => $limit,
    'distinct' => false,
    'url_fragment' => $module_vars['id'],
    'order_by' => [new OrderByClause('e.guid', $latest_first ? 'DESC' : 'ASC')],
    'list_class' => 'comments-list',
];

$show_guid = (int) elgg_extract('show_guid', $vars);
if ($show_guid && $limit) {
    // show the offset that includes the comment
    // this won't work with threaded comments, but core doesn't support that yet
    $operator = $latest_first ? '>' : '<';
    $condition = function(QueryBuilder $qb) use ($show_guid, $operator) {
        return $qb->compare('e.guid', $operator, $show_guid, ELGG_VALUE_INTEGER);
    };
    $count = elgg_get_entities([
        'type' => 'object',
        'subtype' => 'comment',
        'container_guid' => $entity->guid,
        'count' => true,
        'wheres' => [$condition],
    ]);
    $options['offset'] = (int) floor($count / $limit) * $limit;
}

$comments_list = elgg_list_entities($options);

$content = '';
if ($show_add_form && $entity->canComment()) {
    $form_vars = [];
    if ($comments_list) {
        $form_vars['class'] = 'hidden';
        
        $module_vars['menu'] = elgg_view_menu('comments', [
            'items' => [
                [
                    'name' => 'add',
                    'text' => elgg_echo('generic_comments:add'),
                    'href' => false,
                    'icon' => 'plus',
                    'class' => ['elgg-button', 'elgg-button-action'],
                    'rel' => 'toggle',
                    'data-toggle-selector' => '.elgg-form-comment-save',
                ],
            ],
        ]);
    }
    
    $content .= elgg_view_form('comment/save', $form_vars, $vars);
}

$content .= $comments_list;

if (empty($content)) {
    return;
}

echo elgg_view_module('comments', elgg_echo('comments'), $content, $module_vars);