class ContentEntityForm in Zircon Profile 8

Same name and namespace in other branches

8.0 core/lib/Drupal/Core/Entity/ContentEntityForm.php \Drupal\Core\Entity\ContentEntityForm

Entity form variant for content entity types.

View source

class ContentEntityForm extends EntityForm implements ContentEntityFormInterface {

  /**
   * The entity manager.
   *
   * @var \Drupal\Core\Entity\EntityManagerInterface
   */
  protected $entityManager;

  /**
   * Constructs a ContentEntityForm object.
   *
   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
   *   The entity manager.
   */
  public function __construct(EntityManagerInterface $entity_manager) {
    $this->entityManager = $entity_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity.manager'));
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $form = parent::form($form, $form_state);

    // Content entity forms do not use the parent's #after_build callback
    // because they only need to rebuild the entity in the validation and the
    // submit handler because Field API uses its own #after_build callback for
    // its widgets.
    unset($form['#after_build']);
    $this
      ->getFormDisplay($form_state)
      ->buildForm($this->entity, $form, $form_state);

    // Allow modules to act before and after form language is updated.
    $form['#entity_builders']['update_form_langcode'] = [
      $this,
      'updateFormLangcode',
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);

    // Update the changed timestamp of the entity.
    $this
      ->updateChangedTime($this->entity);
  }

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

    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
    $entity = parent::buildEntity($form, $form_state);

    // Mark the entity as requiring validation.
    $entity
      ->setValidationRequired(!$form_state
      ->getTemporaryValue('entity_validated'));
    return $entity;
  }

  /**
   * {@inheritdoc}
   *
   * Button-level validation handlers are highly discouraged for entity forms,
   * as they will prevent entity validation from running. If the entity is going
   * to be saved during the form submission, this method should be manually
   * invoked from the button-level validation handler, otherwise an exception
   * will be thrown.
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
    $entity = $this
      ->buildEntity($form, $form_state);
    $violations = $entity
      ->validate();

    // Remove violations of inaccessible fields and not edited fields.
    $violations
      ->filterByFieldAccess($this
      ->currentUser())
      ->filterByFields(array_diff(array_keys($entity
      ->getFieldDefinitions()), $this
      ->getEditedFieldNames($form_state)));
    $this
      ->flagViolations($violations, $form, $form_state);

    // The entity was validated.
    $entity
      ->setValidationRequired(FALSE);
    $form_state
      ->setTemporaryValue('entity_validated', TRUE);
    return $entity;
  }

  /**
   * Gets the names of all fields edited in the form.
   *
   * If the entity form customly adds some fields to the form (i.e. without
   * using the form display), it needs to add its fields here and override
   * flagViolations() for displaying the violations.
   *
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return string[]
   *   An array of field names.
   */
  protected function getEditedFieldNames(FormStateInterface $form_state) {
    return array_keys($this
      ->getFormDisplay($form_state)
      ->getComponents());
  }

  /**
   * Flags violations for the current form.
   *
   * If the entity form customly adds some fields to the form (i.e. without
   * using the form display), it needs to add its fields to array returned by
   * getEditedFieldNames() and overwrite this method in order to show any
   * violations for those fields; e.g.:
   * @code
   * foreach ($violations->getByField('name') as $violation) {
   *   $form_state->setErrorByName('name', $violation->getMessage());
   * }
   * parent::flagViolations($violations, $form, $form_state);
   * @endcode
   *
   * @param \Drupal\Core\Entity\EntityConstraintViolationListInterface $violations
   *   The violations to flag.
   * @param array $form
   *   A nested array of form elements comprising the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  protected function flagViolations(EntityConstraintViolationListInterface $violations, array $form, FormStateInterface $form_state) {

    // Flag entity level violations.
    foreach ($violations
      ->getEntityViolations() as $violation) {

      /** @var \Symfony\Component\Validator\ConstraintViolationInterface $violation */
      $form_state
        ->setErrorByName('', $violation
        ->getMessage());
    }

    // Let the form display flag violations of its fields.
    $this
      ->getFormDisplay($form_state)
      ->flagWidgetsErrorsFromViolations($violations, $form, $form_state);
  }

  /**
   * Initializes the form state and the entity before the first form build.
   *
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  protected function init(FormStateInterface $form_state) {

    // Ensure we act on the translation object corresponding to the current form
    // language.
    $this
      ->initFormLangcodes($form_state);
    $langcode = $this
      ->getFormLangcode($form_state);
    $this->entity = $this->entity
      ->hasTranslation($langcode) ? $this->entity
      ->getTranslation($langcode) : $this->entity
      ->addTranslation($langcode);
    $form_display = EntityFormDisplay::collectRenderDisplay($this->entity, $this
      ->getOperation());
    $this
      ->setFormDisplay($form_display, $form_state);
    parent::init($form_state);
  }

  /**
   * Initializes form language code values.
   *
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  protected function initFormLangcodes(FormStateInterface $form_state) {

    // Store the entity default language to allow checking whether the form is
    // dealing with the original entity or a translation.
    if (!$form_state
      ->has('entity_default_langcode')) {
      $form_state
        ->set('entity_default_langcode', $this->entity
        ->getUntranslated()
        ->language()
        ->getId());
    }

    // This value might have been explicitly populated to work with a particular
    // entity translation. If not we fall back to the most proper language based
    // on contextual information.
    if (!$form_state
      ->has('langcode')) {

      // Imply a 'view' operation to ensure users edit entities in the same
      // language they are displayed. This allows to keep contextual editing
      // working also for multilingual entities.
      $form_state
        ->set('langcode', $this->entityManager
        ->getTranslationFromContext($this->entity)
        ->language()
        ->getId());
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getFormLangcode(FormStateInterface $form_state) {
    $this
      ->initFormLangcodes($form_state);
    return $form_state
      ->get('langcode');
  }

  /**
   * {@inheritdoc}
   */
  public function isDefaultFormLangcode(FormStateInterface $form_state) {
    $this
      ->initFormLangcodes($form_state);
    return $form_state
      ->get('langcode') == $form_state
      ->get('entity_default_langcode');
  }

  /**
   * {@inheritdoc}
   */
  protected function copyFormValuesToEntity(EntityInterface $entity, array $form, FormStateInterface $form_state) {

    // First, extract values from widgets.
    $extracted = $this
      ->getFormDisplay($form_state)
      ->extractFormValues($entity, $form, $form_state);

    // Then extract the values of fields that are not rendered through widgets,
    // by simply copying from top-level form values. This leaves the fields
    // that are not being edited within this form untouched.
    foreach ($form_state
      ->getValues() as $name => $values) {
      if ($entity
        ->hasField($name) && !isset($extracted[$name])) {
        $entity
          ->set($name, $values);
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getFormDisplay(FormStateInterface $form_state) {
    return $form_state
      ->get('form_display');
  }

  /**
   * {@inheritdoc}
   */
  public function setFormDisplay(EntityFormDisplayInterface $form_display, FormStateInterface $form_state) {
    $form_state
      ->set('form_display', $form_display);
    return $this;
  }

  /**
   * Updates the form language to reflect any change to the entity language.
   *
   * There are use cases for modules to act both before and after form language
   * being updated, thus the update is performed through an entity builder
   * callback, which allows to support both cases.
   *
   * @param string $entity_type_id
   *   The entity type identifier.
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *   The entity updated with the submitted values.
   * @param array $form
   *   The complete form array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @see \Drupal\Core\Entity\ContentEntityForm::form()
   */
  public function updateFormLangcode($entity_type_id, EntityInterface $entity, array $form, FormStateInterface $form_state) {

    // Update the form language as it might have changed.
    if ($this
      ->isDefaultFormLangcode($form_state)) {
      $langcode = $entity
        ->language()
        ->getId();
      $form_state
        ->set('langcode', $langcode);
    }
  }

  /**
   * Updates the changed time of the entity.
   *
   * Applies only if the entity implements the EntityChangedInterface.
   *
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *   The entity updated with the submitted values.
   */
  public function updateChangedTime(EntityInterface $entity) {
    if ($entity
      ->getEntityType()
      ->isSubclassOf(EntityChangedInterface::class)) {
      $entity
        ->setChangedTime(REQUEST_TIME);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ContentEntityForm::$entityManager	protected	property	The entity manager. Overrides EntityForm::$entityManager
ContentEntityForm::buildEntity	public	function	Builds an updated entity object based upon the submitted form values. Overrides EntityForm::buildEntity	4
ContentEntityForm::copyFormValuesToEntity	protected	function	Copies top-level form values to entity properties Overrides EntityForm::copyFormValuesToEntity
ContentEntityForm::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create	7
ContentEntityForm::flagViolations	protected	function	Flags violations for the current form.	2
ContentEntityForm::form	public	function	Gets the actual form array to be built. Overrides EntityForm::form	10
ContentEntityForm::getEditedFieldNames	protected	function	Gets the names of all fields edited in the form.	2
ContentEntityForm::getFormDisplay	public	function	Gets the form display. Overrides ContentEntityFormInterface::getFormDisplay
ContentEntityForm::getFormLangcode	public	function	Gets the code identifying the active form language. Overrides ContentEntityFormInterface::getFormLangcode
ContentEntityForm::init	protected	function	Initializes the form state and the entity before the first form build. Overrides EntityForm::init
ContentEntityForm::initFormLangcodes	protected	function	Initializes form language code values.
ContentEntityForm::isDefaultFormLangcode	public	function	Checks whether the current form language matches the entity one. Overrides ContentEntityFormInterface::isDefaultFormLangcode
ContentEntityForm::setFormDisplay	public	function	Sets the form display. Overrides ContentEntityFormInterface::setFormDisplay
ContentEntityForm::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 EntityForm::submitForm	4
ContentEntityForm::updateChangedTime	public	function	Updates the changed time of the entity.
ContentEntityForm::updateFormLangcode	public	function	Updates the form language to reflect any change to the entity language.
ContentEntityForm::validateForm	public	function	Button-level validation handlers are highly discouraged for entity forms, as they will prevent entity validation from running. If the entity is going to be saved during the form submission, this method should be manually invoked from the button-level… Overrides FormBase::validateForm	3
ContentEntityForm::__construct	public	function	Constructs a ContentEntityForm object.	7
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
EntityForm::$entity	protected	property	The entity being used by this form.	15
EntityForm::$entityTypeManager	protected	property	The entity type manager.
EntityForm::$moduleHandler	protected	property	The module handler service.
EntityForm::$operation	protected	property	The name of the current operation.
EntityForm::actions	protected	function	Returns an array of supported actions for the current entity form.	30
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::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm	7
EntityForm::getBaseFormId	public	function	Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId	4
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	2
EntityForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId	9
EntityForm::getOperation	public	function	Gets the operation identifying the form. Overrides EntityFormInterface::getOperation
EntityForm::prepareEntity	protected	function	Prepares the entity object before the form is built first.	5
EntityForm::prepareInvokeAll	protected	function	Invokes the specified prepare hook variant.
EntityForm::processForm	public	function	Process callback: assigns weights and hides extra fields.
EntityForm::save	public	function	Form submission handler for the 'save' action. Overrides EntityFormInterface::save	36
EntityForm::setEntity	public	function	Sets the form entity. Overrides EntityFormInterface::setEntity
EntityForm::setEntityManager	public	function	Sets the entity manager for this form. Overrides EntityFormInterface::setEntityManager
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
FormBase::$configFactory	protected	property	The config factory.	3
FormBase::$loggerFactory	protected	property	The logger factory.
FormBase::$requestStack	protected	property	The request stack.	1
FormBase::$routeMatch	protected	property	The route match.
FormBase::config	protected	function	Retrieves a configuration object.
FormBase::configFactory	protected	function	Gets the config factory for this form.	3
FormBase::container	private	function	Returns the service container.
FormBase::currentUser	protected	function	Gets the current user.
FormBase::getRequest	protected	function	Gets the request object.
FormBase::getRouteMatch	protected	function	Gets the route match.
FormBase::logger	protected	function	Gets the logger for a specific channel.
FormBase::resetConfigFactory	public	function	Resets the configuration factory.
FormBase::setConfigFactory	public	function	Sets the config factory for this form.
FormBase::setRequestStack	public	function	Sets the request stack object to use.
LinkGeneratorTrait::$linkGenerator	protected	property	The link generator.	1
LinkGeneratorTrait::getLinkGenerator	protected	function	Returns the link generator.
LinkGeneratorTrait::l	protected	function	Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator	public	function	Sets the link generator service.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.
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.
UrlGeneratorTrait::$urlGenerator	protected	property	The url generator.
UrlGeneratorTrait::getUrlGenerator	protected	function	Returns the URL generator service.
UrlGeneratorTrait::redirect	protected	function	Returns a redirect response object for the specified route.
UrlGeneratorTrait::setUrlGenerator	public	function	Sets the URL generator service.
UrlGeneratorTrait::url	protected	function	Generates a URL or path for a specific route based on the given parameters.

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class ContentEntityForm in Zircon Profile 8

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