public function NodeNewComments::preRender in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/comment/src/Plugin/views/field/NodeNewComments.php \Drupal\comment\Plugin\views\field\NodeNewComments::preRender()

Runs before any fields are rendered.

This gives the handlers some time to set up before any handler has been rendered.

Parameters

\Drupal\views\ResultRow[] $values: An array of all ResultRow objects returned from the query.

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

Drupal\comment\Plugin\views\field

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;
      }
    }
  }
}