function abjs_page_attachments in A/B Test JS 8

Same name and namespace in other branches

1. 2.0.x abjs.module \abjs_page_attachments()

Implements hook_page_attachments().

File

./abjs.module, line 26

Write test JavaScript.

Code

function abjs_page_attachments(array &$page) {
  if (\Drupal::service('router.admin_context')
    ->isAdminRoute()) {
    return;
  }

  // Get all active tests that have at least one experience.
  $tests = Database::getConnection()
    ->query("SELECT DISTINCT t.tid FROM {abjs_test} AS t LEFT JOIN {abjs_test_condition} AS tc ON t.tid = tc.tid INNER JOIN {abjs_test_experience} AS te ON t.tid = te.tid WHERE t.active=1")
    ->fetchAll();

  // At least one test with at least one condition and at least one experience.
  // must be active for any script to be added to the page. Because of this,
  // we don't need a similar check later for conditions and experiences
  // individually.
  if (empty($tests)) {
    return;
  }

  // The following section prints out javascript objects for the active tests,
  // conditions, and experiences.
  $abjs_script = abjs_generate_js($tests);
  $page['#attached']['html_head'][] = [
    [
      '#tag' => 'script',
      '#value' => Markup::create($abjs_script),
      '#weight' => -100,
    ],
    'abjs_script',
  ];
}