function authcache_form_alter in Authenticated User Page Caching (Authcache) 7.2

Same name and namespace in other branches

1. 6 authcache.module \authcache_form_alter()
2. 7 authcache.module \authcache_form_alter()

Implements hook_form_alter().

Related topics

File

./authcache.module, line 211

Authenticated User Page Caching (and anonymous users, too!)

Code

function authcache_form_alter(&$form, &$form_state, $form_id) {
  global $user;
  if (authcache_page_is_cacheable()) {

    // Ensure that the default form_after build callback is called first.
    if (empty($form['#after_build'])) {
      $form['#after_build'] = array(
        '_authcache_default_form_after_build',
      );
    }
    else {
      array_unshift($form['#after_build'], '_authcache_default_form_after_build');
    }

    // Add post-render callback ensuring that caching is canceled when a form
    // requiring the form cache is rendered on a page for authenticated users.
    if ($user->uid && !empty($form['form_build_id'])) {
      authcache_element_suspect($form['form_build_id'], t('Form requiring the form cache on the page. Enable authcache_form or implement custom code capable of handling cached forms.'));
    }

    // Add post-render callback ensuring that caching is canceled when a form
    // was not handled by any module.
    if (!empty($form['form_token'])) {
      authcache_element_suspect($form['form_token'], t('Form with CSRF protection on page. Enable authcache_form or implement custom code capable of handling CSRF protected forms.'));
    }

    // Recursively find elements of type value and flag them as suspicous.
    authcache_form_value_suspect($form, $form_id);
  }

  // Alter all forms.
  switch ($form_id) {
    case 'user_profile_form':

      // Don't allow user local timezone.
      if (authcache_account_allows_caching()) {
        unset($form['timezone']);
      }
      break;
    case 'contact_site_form':
    case 'contact_personal_form':
      if ($user->uid && authcache_page_is_cacheable()) {
        unset($form['name']['#default_value']);
        unset($form['mail']['#default_value']);
      }
      break;
  }
}