Fetches a form from cache.
function form_get_cache($form_build_id, &$form_state) {
if ($cached = cache_get('form_' . $form_build_id, 'cache_form')) {
$form = $cached->data;
global $user;
if (isset($form['#cache_token']) && drupal_valid_token($form['#cache_token']) || !isset($form['#cache_token']) && !$user->uid) {
if ($cached = cache_get('form_state_' . $form_build_id, 'cache_form')) {
// Re-populate $form_state for subsequent rebuilds.
$form_state = $cached->data + $form_state;
// If the original form is contained in include files, load the files.
// @see form_load_include()
$form_state['build_info'] += array(
'files' => array(),
);
foreach ($form_state['build_info']['files'] as $file) {
if (is_array($file)) {
$file += array(
'type' => 'inc',
'name' => $file['module'],
);
module_load_include($file['type'], $file['module'], $file['name']);
}
elseif (file_exists($file)) {
require_once DRUPAL_ROOT . '/' . $file;
}
}
}
// Generate a new #build_id if the cached form was rendered on a cacheable
// page.
if (!empty($form_state['build_info']['immutable'])) {
$form['#build_id_old'] = $form['#build_id'];
$form['#build_id'] = 'form-' . drupal_random_key();
$form['form_build_id']['#value'] = $form['#build_id'];
$form['form_build_id']['#id'] = $form['#build_id'];
unset($form_state['build_info']['immutable']);
}
return $form;
}
}
}