function FormCache::setCache

File

core/lib/Drupal/Core/Form/FormCache.php, line 173

Class

FormCache

Encapsulates the caching of a form and its form state.

Namespace

Code

public function setCache($form_build_id, $form, FormStateInterface $form_state) {
    // Cache forms for 6 hours by default.
    $expire = Settings::get('form_cache_expiration', 21600);
    // Ensure that the form build_id embedded in the form structure is the same
    // as the one passed in as a parameter. This is an additional safety measure
    // to prevent legacy code operating directly with
    // \Drupal::formBuilder()->getCache() and \Drupal::formBuilder()->setCache()
    // from accidentally overwriting immutable form state.
    if (isset($form['#build_id']) && $form['#build_id'] != $form_build_id) {
        $this->logger
            ->error('Form build-id mismatch detected while attempting to store a form in the cache.');
        return;
    }
    // Cache form structure.
    if (isset($form)) {
        if ($this->currentUser
            ->isAuthenticated()) {
            $form['#cache_token'] = $this->csrfToken
                ->get();
        }
        unset($form['#build_id_old']);
        $this->keyValueExpirableFactory
            ->get('form')
            ->setWithExpire($form_build_id, $form, $expire);
    }
    if ($data = $form_state->getCacheableArray()) {
        $this->keyValueExpirableFactory
            ->get('form_state')
            ->setWithExpire($form_build_id, $data, $expire);
    }
}