class NodePreviewForm in Drupal 9

Same name and namespace in other branches

8 core/modules/node/src/Form/NodePreviewForm.php \Drupal\node\Form\NodePreviewForm

Contains a form for switching the view mode of a node during preview.

@internal

Hierarchy

class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LoggerChannelTrait, MessengerTrait, RedirectDestinationTrait, StringTranslationTrait
- class \Drupal\node\Form\NodePreviewForm

Expanded class hierarchy of NodePreviewForm

File

core/modules/node/src/Form/NodePreviewForm.php, line 18

Namespace

Drupal\node\Form

View source

class NodePreviewForm extends FormBase {

  /**
   * The entity display repository.
   *
   * @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface
   */
  protected $entityDisplayRepository;

  /**
   * The config factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity_display.repository'), $container
      ->get('config.factory'));
  }

  /**
   * Constructs a new NodePreviewForm.
   *
   * @param \Drupal\Core\Entity\EntityDisplayRepositoryInterface $entity_display_repository
   *   The entity display repository.
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The configuration factory.
   */
  public function __construct(EntityDisplayRepositoryInterface $entity_display_repository, ConfigFactoryInterface $config_factory) {
    $this->entityDisplayRepository = $entity_display_repository;
    $this->configFactory = $config_factory;
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'node_preview_form_select';
  }

  /**
   * Form constructor.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   * @param \Drupal\Core\Entity\EntityInterface $node
   *   The node being previews
   *
   * @return array
   *   The form structure.
   */
  public function buildForm(array $form, FormStateInterface $form_state, EntityInterface $node = NULL) {
    $view_mode = $node->preview_view_mode;
    $query_options = [
      'query' => [
        'uuid' => $node
          ->uuid(),
      ],
    ];
    $query = $this
      ->getRequest()->query;
    if ($query
      ->has('destination')) {
      $query_options['query']['destination'] = $query
        ->get('destination');
    }
    $form['backlink'] = [
      '#type' => 'link',
      '#title' => $this
        ->t('Back to content editing'),
      '#url' => $node
        ->isNew() ? Url::fromRoute('node.add', [
        'node_type' => $node
          ->bundle(),
      ]) : $node
        ->toUrl('edit-form'),
      '#options' => [
        'attributes' => [
          'class' => [
            'node-preview-backlink',
          ],
        ],
      ] + $query_options,
    ];

    // Always show full as an option, even if the display is not enabled.
    $view_mode_options = [
      'full' => $this
        ->t('Full'),
    ] + $this->entityDisplayRepository
      ->getViewModeOptionsByBundle('node', $node
      ->bundle());

    // Unset view modes that are not used in the front end.
    unset($view_mode_options['default']);
    unset($view_mode_options['rss']);
    unset($view_mode_options['search_index']);
    $form['uuid'] = [
      '#type' => 'value',
      '#value' => $node
        ->uuid(),
    ];
    $form['view_mode'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('View mode'),
      '#options' => $view_mode_options,
      '#default_value' => $view_mode,
      '#attributes' => [
        'data-drupal-autosubmit' => TRUE,
      ],
    ];
    $form['submit'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Switch'),
      '#attributes' => [
        'class' => [
          'js-hide',
        ],
      ],
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $route_parameters = [
      'node_preview' => $form_state
        ->getValue('uuid'),
      'view_mode_id' => $form_state
        ->getValue('view_mode'),
    ];
    $options = [];
    $query = $this
      ->getRequest()->query;
    if ($query
      ->has('destination')) {
      $options['query']['destination'] = $query
        ->get('destination');
      $query
        ->remove('destination');
    }
    $form_state
      ->setRedirect('entity.node.preview', $route_parameters, $options);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
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
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.
NodePreviewForm::$configFactory	protected	property	The config factory. Overrides FormBase::$configFactory
NodePreviewForm::$entityDisplayRepository	protected	property	The entity display repository.
NodePreviewForm::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm
NodePreviewForm::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create
NodePreviewForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId
NodePreviewForm::submitForm	public	function	Form submission handler. Overrides FormInterface::submitForm
NodePreviewForm::__construct	public	function	Constructs a new NodePreviewForm.
RedirectDestinationTrait::$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 NodePreviewForm in Drupal 9

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