function NodeNewComments::preRender

Overrides FieldPluginBase::preRender

File

core/modules/comment/src/Plugin/views/field/NodeNewComments.php, line 147

Class

NodeNewComments

Field handler to display the number of new comments.

Namespace

Code

public function preRender(&$values) {
    $user = \Drupal::currentUser();
    if ($user->isAnonymous() || empty($values)) {
        return;
    }
    $nids = [];
    $ids = [];
    foreach ($values as $id => $result) {
        $nids[] = $result->{$this->aliases['nid']};
        $values[$id]->{$this->field_alias} = 0;
        // Create a reference so we can find this record in the values again.
        if (empty($ids[$result->{$this->aliases['nid']}])) {
            $ids[$result->{$this->aliases['nid']}] = [];
        }
        $ids[$result->{$this->aliases['nid']}][] = $id;
    }
    if ($nids) {
        $result = $this->database
            ->query("SELECT n.nid, COUNT(c.cid) AS num_comments FROM {node} n INNER JOIN {comment_field_data} c ON n.nid = c.entity_id AND c.entity_type = 'node' AND c.default_langcode = 1\n        LEFT JOIN {history} h ON h.nid = n.nid AND h.uid = :h_uid WHERE n.nid IN ( :nids[] )\n        AND c.changed > GREATEST(COALESCE(h.timestamp, :timestamp1), :timestamp2) AND c.status = :status GROUP BY n.nid", [
            ':status' => CommentInterface::PUBLISHED,
            ':h_uid' => $user->id(),
            ':nids[]' => $nids,
            ':timestamp1' => HISTORY_READ_LIMIT,
            ':timestamp2' => HISTORY_READ_LIMIT,
        ]);
        foreach ($result as $node) {
            foreach ($ids[$node->nid] as $id) {
                $values[$id]->{$this->field_alias} = $node->num_comments;
            }
        }
    }
}