class CdnJsdelivrVersion

The "cdn_jsdelivr_version" theme setting.

Plugin annotation

  cdn_provider = "jsdelivr",
  id = "cdn_jsdelivr_version",
  type = "select",
  weight = -1,
  title = @Translation("Version"),
  description = @Translation("Choose the Bootstrap version from jsdelivr"),
  defaultValue = @BootstrapConstant("Drupal\bootstrap\Bootstrap::FRAMEWORK_VERSION"),
  groups = {
    "advanced" = @Translation("Advanced"),
    "cdn" = @Translation("CDN (Content Delivery Network)"),
    "jsdelivr" = false,


Expanded class hierarchy of CdnJsdelivrVersion

Related topics


class CdnJsdelivrVersion extends CdnProvider {

   * {@inheritdoc}
  public function alterFormElement(Element $form, FormStateInterface $form_state, $form_id = NULL) {
    $plugin_id = Html::cleanCssIdentifier($this->provider->getPluginId());
    $setting = $this->getSettingElement($form, $form_state);

    $setting->setProperty('options', $this->provider->getVersions());
    $setting->setProperty('ajax', [
      'callback' => [get_class($this), 'ajaxCallback'],
      'wrapper' => 'cdn-provider-' . $plugin_id,

    if (!$this->provider->hasError() && !$this->provider->isImported()) {
      $setting->setProperty('description', t('These versions are automatically populated by the @provider API upon cache clear and newer versions may appear over time. It is highly recommended the version that the site was built with stays at that version. Until a newer version has been properly tested for updatability by the site maintainer, you should not arbitrarily "update" just because there is a newer version. This can cause many inconsistencies and undesired effects with an existing site.', [
        '@provider' => $this->provider->getLabel(),

   * AJAX callback for reloading CDN provider elements.
   * @param array $form
   *   Nested array of form elements that comprise the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
  public static function ajaxCallback(array $form, FormStateInterface $form_state) {
    return $form['advanced']['cdn'][$form_state->getValue('cdn_provider', Bootstrap::getTheme()->getSetting('cdn_provider'))];



Contains filters are case sensitive
Namesort descending Modifiers Type Description
CdnJsdelivrVersion::ajaxCallback public static function AJAX callback for reloading CDN provider elements. Overrides CdnProvider::ajaxCallback
CdnJsdelivrVersion::alterFormElement public function The alter method to store the code. Overrides CdnProvider::alterFormElement
CdnProvider::$provider protected property The current provider.
CdnProvider::$providerManager protected property The current provider manager instance.
CdnProvider::createProviderGroup private function Creates the necessary containers for each provider.
CdnProvider::getCacheTags public function The cache tags associated with this object. Overrides SettingBase::getCacheTags
CdnProvider::importProviderData private function Imports data for a provider that was manually uploaded in theme settings.
CdnProvider::__construct public function Overrides PluginBase::__construct
PluginBase::$theme protected property The currently set theme object.
SettingBase::alterForm public function The alter method to store the code. Overrides FormInterface::alterForm
SettingBase::drupalSettings public function Determines whether a theme setting should added to drupalSettings. Overrides SettingInterface::drupalSettings
SettingBase::getDefaultValue public function Retrieves the setting's default value. Overrides SettingInterface::getDefaultValue
SettingBase::getElement Deprecated public function Overrides SettingInterface::getElement
SettingBase::getElementProperties public function Retrieves all the form properties from the setting definition.
SettingBase::getGroup Deprecated public function Overrides SettingInterface::getGroup
SettingBase::getGroupElement public function Retrieves the group form element the setting belongs to. Overrides SettingInterface::getGroupElement
SettingBase::getGroups public function Retrieves the setting's groups. Overrides SettingInterface::getGroups
SettingBase::getOptions public function Retrieves the settings options, if set. Overrides SettingInterface::getOptions
SettingBase::getSettingElement public function Retrieves the form element for the setting. Overrides SettingInterface::getSettingElement
SettingBase::getTitle public function Retrieves the setting's human-readable title. Overrides SettingInterface::getTitle
SettingBase::submitForm public static function Form submission handler. Overrides FormInterface::submitForm
SettingBase::submitFormElement public static function Form submission handler. Overrides FormInterface::submitFormElement
SettingBase::validateForm public static function Form validation handler. Overrides FormInterface::validateForm
SettingBase::validateFormElement public static function Form validation handler. Overrides FormInterface::validateFormElement