function hook_views_preview_info_alter

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.

Parameters

array $rows: An associative array with two keys:

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

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

See also

\Drupal\views_ui\ViewUI

theme_table()

Related topics

Views hooks
Hooks that allow other modules to implement the Views API.
1 invocation of hook_views_preview_info_alter()
ViewUI::renderPreview in drupal/core/modules/views_ui/lib/Drupal/views_ui/ViewUI.php

File

drupal/core/modules/views/views.api.php, line 568
Describes hooks and plugins provided by the Views module.

Code

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)) . ')',
  );
}