/Drupal 8

function hook_views_preview_info_alter

hook_views_preview_info_alter(array &$rows, ViewExecutable $view)

Alter the view preview information.

The view preview information is optionally displayed when a view is previewed in the administrative UI. It includes query and performance statistics.


array $rows: An associative array with two keys:

  • query: An array of rows suitable for '#type' => 'table', containing information about the query and the display title and path.
  • statistics: An array of rows suitable for '#type' => 'table', containing performance statistics.

\Drupal\views\ViewExecutable $view: The view object.

See also



Related topics

Define functions that alter the behavior of Drupal core.


core/modules/views/views.api.php, line 915
Describes hooks and plugins provided by the Views module.


function hook_views_preview_info_alter(array &$rows, ViewExecutable $view) {
  // Adds information about the tables being queried by the view to the query
  // part of the info box.
  $rows['query'][] = array(
    t('<strong>Table queue</strong>'),
    count($view->query->table_queue) . ': (' . implode(', ', array_keys($view->query->table_queue)) . ')',

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