function _authcache_form_after_build in Authenticated User Page Caching (Authcache) 7.2

Form after_build callback for forms on cacheable pages.

Setup form such that the per-session form token (used for CSRF protection) can be retrieved separately.

See also

drupal_build_form()

1 string reference to '_authcache_form_after_build'

authcache_form_form_alter in modules/authcache_form/authcache_form.module

Implements hook_form_alter().

File

modules/authcache_form/authcache_form.module, line 163

Form token retrieval for Authcache.

Code

function _authcache_form_after_build($form, $form_state) {
  global $user;
  if (authcache_page_is_cacheable()) {
    if (!empty($form['form_build_id']) && $user->uid && !authcache_element_is_cacheable($form['form_build_id'])) {

      // Cached forms break for authenticated users unless Cache Object API is
      // configured properly.
      if (module_exists('cacheobject')) {
        authcache_element_set_cacheable($form['form_build_id']);
      }
      else {
        authcache_cancel(t('Cached form on the page (likely Ajax enabled). Download and configure the Cache Object API module.'));
      }
    }
    if (!empty($form['form_token']) && !authcache_element_is_cacheable($form['form_token'])) {

      // Replace hidden form_token input with personalization request fragment.
      $form_token_id = isset($form['#token']) ? $form['#token'] : $form['#form_id'];
      authcache_p13n_attach($form['form_token'], array(
        '#theme' => 'authcache_p13n_fragment',
        '#fragment' => 'form-token',
        '#param' => $form_token_id,
        '#fallback' => 'cancel',
      ));
      authcache_element_set_cacheable($form['form_token']);
    }
  }
  return $form;
}