class LanguageAddForm in Drupal 9

Same name and namespace in other branches

8 core/modules/language/src/Form/LanguageAddForm.php \Drupal\language\Form\LanguageAddForm
10 core/modules/language/src/Form/LanguageAddForm.php \Drupal\language\Form\LanguageAddForm

Controller for language addition forms.

@internal

Hierarchy

class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LoggerChannelTrait, MessengerTrait, RedirectDestinationTrait, StringTranslationTrait
- class \Drupal\Core\Entity\EntityForm implements EntityFormInterface
  - class \Drupal\language\Form\LanguageFormBase
    class \Drupal\language\Form\LanguageAddForm

Expanded class hierarchy of LanguageAddForm

File

core/modules/language/src/Form/LanguageAddForm.php, line 16

Namespace

Drupal\language\Form

View source

class LanguageAddForm extends LanguageFormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {

    // @todo Remove in favor of base method.
    return 'language_admin_add_form';
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $form['#title'] = $this
      ->t('Add language');
    $predefined_languages = $this->languageManager
      ->getStandardLanguageListWithoutConfigured();
    $predefined_languages['custom'] = $this
      ->t('Custom language...');
    $predefined_default = $form_state
      ->getValue('predefined_langcode', key($predefined_languages));
    $form['predefined_langcode'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Language name'),
      '#default_value' => $predefined_default,
      '#options' => $predefined_languages,
    ];
    $form['predefined_submit'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Add language'),
      '#name' => 'add_language',
      '#limit_validation_errors' => [
        [
          'predefined_langcode',
        ],
        [
          'predefined_submit',
        ],
      ],
      '#states' => [
        'invisible' => [
          'select#edit-predefined-langcode' => [
            'value' => 'custom',
          ],
        ],
      ],
      '#validate' => [
        '::validatePredefined',
      ],
      '#submit' => [
        '::submitForm',
        '::save',
      ],
      '#button_type' => 'primary',
    ];
    $custom_language_states_conditions = [
      'select#edit-predefined-langcode' => [
        'value' => 'custom',
      ],
    ];
    $form['custom_language'] = [
      '#type' => 'container',
      '#states' => [
        'visible' => $custom_language_states_conditions,
      ],
    ];
    $this
      ->commonForm($form['custom_language']);
    $form['custom_language']['langcode']['#states'] = [
      'required' => $custom_language_states_conditions,
    ];
    $form['custom_language']['label']['#states'] = [
      'required' => $custom_language_states_conditions,
    ];
    $form['custom_language']['submit'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Add custom language'),
      '#name' => 'add_custom_language',
      '#validate' => [
        '::validateCustom',
      ],
      '#submit' => [
        '::submitForm',
        '::save',
      ],
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    parent::save($form, $form_state);
    $t_args = [
      '%language' => $this->entity
        ->label(),
      '%langcode' => $this->entity
        ->id(),
    ];
    $this
      ->logger('language')
      ->notice('The %language (%langcode) language has been created.', $t_args);
    $this
      ->messenger()
      ->addStatus($this
      ->t('The language %language has been created and can now be used.', $t_args));
    if ($this->moduleHandler
      ->moduleExists('block')) {

      // Tell the user they have the option to add a language switcher block
      // to their theme so they can switch between the languages.
      $this
        ->messenger()
        ->addStatus($this
        ->t('Use one of the language switcher blocks to allow site visitors to switch between languages. You can enable these blocks on the <a href=":block-admin">block administration page</a>.', [
        ':block-admin' => Url::fromRoute('block.admin_display')
          ->toString(),
      ]));
    }
    $form_state
      ->setRedirectUrl($this->entity
      ->toUrl('collection'));
  }

  /**
   * {@inheritdoc}
   */
  public function actions(array $form, FormStateInterface $form_state) {

    // No actions needed.
    return [];
  }

  /**
   * Validates the language addition form on custom language button.
   */
  public function validateCustom(array $form, FormStateInterface $form_state) {
    if ($form_state
      ->getValue('predefined_langcode') == 'custom') {
      $langcode = $form_state
        ->getValue('langcode');

      // Reuse the editing form validation routine if we add a custom language.
      $this
        ->validateCommon($form['custom_language'], $form_state);
      if ($language = $this->languageManager
        ->getLanguage($langcode)) {
        $form_state
          ->setErrorByName('langcode', $this
          ->t('The language %language (%langcode) already exists.', [
          '%language' => $language
            ->getName(),
          '%langcode' => $langcode,
        ]));
      }
    }
    else {
      $form_state
        ->setErrorByName('predefined_langcode', $this
        ->t('Use the <em>Add language</em> button to save a predefined language.'));
    }
  }

  /**
   * Element specific validator for the Add language button.
   */
  public function validatePredefined($form, FormStateInterface $form_state) {
    $langcode = $form_state
      ->getValue('predefined_langcode');
    if ($langcode == 'custom') {
      $form_state
        ->setErrorByName('predefined_langcode', $this
        ->t('Fill in the language details and save the language with <em>Add custom language</em>.'));
    }
    else {
      if ($language = $this->languageManager
        ->getLanguage($langcode)) {
        $form_state
          ->setErrorByName('predefined_langcode', $this
          ->t('The language %language (%langcode) already exists.', [
          '%language' => $language
            ->getName(),
          '%langcode' => $langcode,
        ]));
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  protected function copyFormValuesToEntity(EntityInterface $entity, array $form, FormStateInterface $form_state) {
    $langcode = $form_state
      ->getValue('predefined_langcode');
    if ($langcode == 'custom') {
      $langcode = $form_state
        ->getValue('langcode');
      $label = $form_state
        ->getValue('label');
      $direction = $form_state
        ->getValue('direction');
    }
    else {
      $standard_languages = LanguageManager::getStandardLanguageList();
      $label = $standard_languages[$langcode][0];
      $direction = isset($standard_languages[$langcode][2]) ? $standard_languages[$langcode][2] : ConfigurableLanguage::DIRECTION_LTR;
    }
    $entity
      ->set('id', $langcode);
    $entity
      ->set('label', $label);
    $entity
      ->set('direction', $direction);

    // There is no weight on the edit form. Fetch all configurable languages
    // ordered by weight and set the new language to be placed after them.
    $languages = \Drupal::languageManager()
      ->getLanguages(ConfigurableLanguage::STATE_CONFIGURABLE);
    $last_language = end($languages);
    $entity
      ->setWeight($last_language
      ->getWeight() + 1);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
EntityForm::$entity	protected	property	The entity being used by this form.	11
EntityForm::$entityTypeManager	protected	property	The entity type manager.	3
EntityForm::$moduleHandler	protected	property	The module handler service.
EntityForm::$operation	protected	property	The name of the current operation.
EntityForm::actionsElement	protected	function	Returns the action form element for the current entity form.
EntityForm::afterBuild	public	function	Form element #after_build callback: Updates the entity with submitted data.
EntityForm::buildEntity	public	function	Builds an updated entity object based upon the submitted form values. Overrides EntityFormInterface::buildEntity	3
EntityForm::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm	13
EntityForm::getBaseFormId	public	function	Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId	6
EntityForm::getEntity	public	function	Gets the form entity. Overrides EntityFormInterface::getEntity
EntityForm::getEntityFromRouteMatch	public	function	Determines which entity will be used by this form from a RouteMatch object. Overrides EntityFormInterface::getEntityFromRouteMatch	3
EntityForm::getOperation	public	function	Gets the operation identifying the form. Overrides EntityFormInterface::getOperation
EntityForm::init	protected	function	Initialize the form state and the entity before the first form build.	3
EntityForm::prepareEntity	protected	function	Prepares the entity object before the form is built first.	3
EntityForm::prepareInvokeAll	protected	function	Invokes the specified prepare hook variant.
EntityForm::processForm	public	function	Process callback: assigns weights and hides extra fields.
EntityForm::setEntity	public	function	Sets the form entity. Overrides EntityFormInterface::setEntity
EntityForm::setEntityTypeManager	public	function	Sets the entity type manager for this form. Overrides EntityFormInterface::setEntityTypeManager
EntityForm::setModuleHandler	public	function	Sets the module handler for this form. Overrides EntityFormInterface::setModuleHandler
EntityForm::setOperation	public	function	Sets the operation for this form. Overrides EntityFormInterface::setOperation
EntityForm::submitForm	public	function	This is the default entity object builder function. It is called before any other submit handler to build the new entity object to be used by the following submit handlers. At this point of the form workflow the entity is validated and the form state… Overrides FormInterface::submitForm	20
FormBase::$configFactory	protected	property	The config factory.	3
FormBase::$requestStack	protected	property	The request stack.	1
FormBase::$routeMatch	protected	property	The route match.
FormBase::config	protected	function	Retrieves a configuration object.
FormBase::configFactory	protected	function	Gets the config factory for this form.	3
FormBase::container	private	function	Returns the service container.
FormBase::currentUser	protected	function	Gets the current user.
FormBase::getRequest	protected	function	Gets the request object.
FormBase::getRouteMatch	protected	function	Gets the route match.
FormBase::logger	protected	function	Gets the logger for a specific channel.
FormBase::redirect	protected	function	Returns a redirect response object for the specified route.
FormBase::resetConfigFactory	public	function	Resets the configuration factory.
FormBase::setConfigFactory	public	function	Sets the config factory for this form.
FormBase::setRequestStack	public	function	Sets the request stack object to use.
FormBase::validateForm	public	function	Form validation handler. Overrides FormInterface::validateForm	72
LanguageAddForm::actions	public	function	Returns an array of supported actions for the current entity form. Overrides EntityForm::actions
LanguageAddForm::copyFormValuesToEntity	protected	function	Copies top-level form values to entity properties. Overrides EntityForm::copyFormValuesToEntity
LanguageAddForm::form	public	function	Gets the actual form array to be built. Overrides EntityForm::form
LanguageAddForm::getFormId	public	function	Returns a unique string identifying the form. Overrides EntityForm::getFormId
LanguageAddForm::save	public	function	Form submission handler for the 'save' action. Overrides EntityForm::save
LanguageAddForm::validateCustom	public	function	Validates the language addition form on custom language button.
LanguageAddForm::validatePredefined	public	function	Element specific validator for the Add language button.
LanguageFormBase::$languageManager	protected	property	The configurable language manager.
LanguageFormBase::commonForm	public	function	Common elements of the language addition and editing form.
LanguageFormBase::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create
LanguageFormBase::validateCommon	public	function	Validates the language editing element.
LanguageFormBase::__construct	public	function	Constructs a ContentEntityForm object.
LoggerChannelTrait::$loggerFactory	protected	property	The logger channel factory service.
LoggerChannelTrait::getLogger	protected	function	Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory	public	function	Injects the logger channel factory.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.	1
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.

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class LanguageAddForm in Drupal 9

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