class FileUploadForm in Drupal 8

Same name and namespace in other branches

9 core/modules/media_library/src/Form/FileUploadForm.php \Drupal\media_library\Form\FileUploadForm

Creates a form to create media entities from uploaded files.

@internal Form classes are internal.

Hierarchy

class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LoggerChannelTrait, MessengerTrait, LinkGeneratorTrait, RedirectDestinationTrait, UrlGeneratorTrait, StringTranslationTrait
- class \Drupal\media_library\Form\AddFormBase implements BaseFormIdInterface, TrustedCallbackInterface
  - class \Drupal\media_library\Form\FileUploadForm

Expanded class hierarchy of FileUploadForm

2 files declare their use of FileUploadForm

MediaLibraryAddFormTest.php in core/modules/media_library/tests/src/Kernel/MediaLibraryAddFormTest.php
media_library.module in core/modules/media_library/media_library.module: Contains hook implementations for the media_library module.

File

core/modules/media_library/src/Form/FileUploadForm.php, line 32

Namespace

Drupal\media_library\Form

View source

class FileUploadForm extends AddFormBase {

  /**
   * The element info manager.
   *
   * @var \Drupal\Core\Render\ElementInfoManagerInterface
   */
  protected $elementInfo;

  /**
   * The renderer service.
   *
   * @var \Drupal\Core\Render\ElementInfoManagerInterface
   */
  protected $renderer;

  /**
   * The file system service.
   *
   * @var \Drupal\Core\File\FileSystemInterface
   */
  protected $fileSystem;

  /**
   * The file usage service.
   *
   * @var \Drupal\file\FileUsage\FileUsageInterface
   */
  protected $fileUsage;

  /**
   * Constructs a new FileUploadForm.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param \Drupal\media_library\MediaLibraryUiBuilder $library_ui_builder
   *   The media library UI builder.
   * @param \Drupal\Core\Render\ElementInfoManagerInterface $element_info
   *   The element info manager.
   * @param \Drupal\Core\Render\RendererInterface $renderer
   *   The renderer service.
   * @param \Drupal\Core\File\FileSystemInterface $file_system
   *   The file system service.
   * @param \Drupal\media_library\OpenerResolverInterface $opener_resolver
   *   The opener resolver.
   * @param \Drupal\file\FileUsage\FileUsageInterface $file_usage
   *   The file usage service.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager, MediaLibraryUiBuilder $library_ui_builder, ElementInfoManagerInterface $element_info, RendererInterface $renderer, FileSystemInterface $file_system, OpenerResolverInterface $opener_resolver = NULL, FileUsageInterface $file_usage = NULL) {
    parent::__construct($entity_type_manager, $library_ui_builder, $opener_resolver);
    $this->elementInfo = $element_info;
    $this->renderer = $renderer;
    $this->fileSystem = $file_system;
    if (!$file_usage) {
      @trigger_error('Calling FileUploadForm::__construct() without the `file.usage` service is deprecated in drupal:8.8.0 and is removed in drupal:9.0.0. Pass the `file.usage` service to the constructor. See https://www.drupal.org/node/3075165', E_USER_DEPRECATED);
      $file_usage = \Drupal::service('file.usage');
    }
    $this->fileUsage = $file_usage;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity_type.manager'), $container
      ->get('media_library.ui_builder'), $container
      ->get('element_info'), $container
      ->get('renderer'), $container
      ->get('file_system'), $container
      ->get('media_library.opener_resolver'), $container
      ->get('file.usage'));
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return $this
      ->getBaseFormId() . '_upload';
  }

  /**
   * {@inheritdoc}
   */
  protected function getMediaType(FormStateInterface $form_state) {
    if ($this->mediaType) {
      return $this->mediaType;
    }
    $media_type = parent::getMediaType($form_state);

    // The file upload form only supports media types which use a file field as
    // a source field.
    $field_definition = $media_type
      ->getSource()
      ->getSourceFieldDefinition($media_type);
    if (!is_a($field_definition
      ->getClass(), FileFieldItemList::class, TRUE)) {
      throw new \InvalidArgumentException('Can only add media types which use a file field as a source field.');
    }
    return $media_type;
  }

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

    // Create a file item to get the upload validators.
    $media_type = $this
      ->getMediaType($form_state);
    $item = $this
      ->createFileItem($media_type);

    /** @var \Drupal\media_library\MediaLibraryState $state */
    $state = $this
      ->getMediaLibraryState($form_state);
    if (!$state
      ->hasSlotsAvailable()) {
      return $form;
    }
    $slots = $state
      ->getAvailableSlots();

    // Add a container to group the input elements for styling purposes.
    $form['container'] = [
      '#type' => 'container',
    ];
    $process = (array) $this->elementInfo
      ->getInfoProperty('managed_file', '#process', []);
    $form['container']['upload'] = [
      '#type' => 'managed_file',
      '#title' => $this
        ->formatPlural($slots, 'Add file', 'Add files'),
      // @todo Move validation in https://www.drupal.org/node/2988215
      '#process' => array_merge([
        '::validateUploadElement',
      ], $process, [
        '::processUploadElement',
      ]),
      '#upload_validators' => $item
        ->getUploadValidators(),
      '#multiple' => $slots > 1 || $slots === FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
      '#cardinality' => $slots,
      '#remaining_slots' => $slots,
    ];
    $file_upload_help = [
      '#theme' => 'file_upload_help',
      '#upload_validators' => $form['container']['upload']['#upload_validators'],
      '#cardinality' => $slots,
    ];

    // The file upload help needs to be rendered since the description does not
    // accept render arrays. The FileWidget::formElement() method adds the file
    // upload help in the same way, so any theming improvements made to file
    // fields would also be applied to this upload field.
    // @see \Drupal\file\Plugin\Field\FieldWidget\FileWidget::formElement()
    $form['container']['upload']['#description'] = $this->renderer
      ->renderPlain($file_upload_help);
    return $form;
  }

  /**
   * Validates the upload element.
   *
   * @param array $element
   *   The upload element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   *
   * @return array
   *   The processed upload element.
   */
  public function validateUploadElement(array $element, FormStateInterface $form_state) {
    if ($form_state::hasAnyErrors()) {

      // When an error occurs during uploading files, remove all files so the
      // user can re-upload the files.
      $element['#value'] = [];
    }
    $values = $form_state
      ->getValue('upload', []);
    if (count($values['fids']) > $element['#cardinality'] && $element['#cardinality'] !== FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) {
      $form_state
        ->setError($element, $this
        ->t('A maximum of @count files can be uploaded.', [
        '@count' => $element['#cardinality'],
      ]));
      $form_state
        ->setValue('upload', []);
      $element['#value'] = [];
    }
    return $element;
  }

  /**
   * Processes an upload (managed_file) element.
   *
   * @param array $element
   *   The upload element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   *
   * @return array
   *   The processed upload element.
   */
  public function processUploadElement(array $element, FormStateInterface $form_state) {
    $element['upload_button']['#submit'] = [
      '::uploadButtonSubmit',
    ];

    // Limit the validation errors to make sure
    // FormValidator::handleErrorsWithLimitedValidation doesn't remove the
    // current selection from the form state.
    // @see Drupal\Core\Form\FormValidator::handleErrorsWithLimitedValidation()
    $element['upload_button']['#limit_validation_errors'] = [
      [
        'upload',
      ],
      [
        'current_selection',
      ],
    ];
    $element['upload_button']['#ajax'] = [
      'callback' => '::updateFormCallback',
      'wrapper' => 'media-library-wrapper',
      // Add a fixed URL to post the form since AJAX forms are automatically
      // posted to <current> instead of $form['#action'].
      // @todo Remove when https://www.drupal.org/project/drupal/issues/2504115
      //   is fixed.
      'url' => Url::fromRoute('media_library.ui'),
      'options' => [
        'query' => $this
          ->getMediaLibraryState($form_state)
          ->all() + [
          FormBuilderInterface::AJAX_FORM_REQUEST => TRUE,
        ],
      ],
    ];
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  protected function buildEntityFormElement(MediaInterface $media, array $form, FormStateInterface $form_state, $delta) {
    $element = parent::buildEntityFormElement($media, $form, $form_state, $delta);
    $source_field = $this
      ->getSourceFieldName($media->bundle->entity);
    if (isset($element['fields'][$source_field])) {
      $element['fields'][$source_field]['widget'][0]['#process'][] = [
        static::class,
        'hideExtraSourceFieldComponents',
      ];
    }
    return $element;
  }

  /**
   * Processes an image or file source field element.
   *
   * @param array $element
   *   The entity form source field element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current form state.
   * @param $form
   *   The complete form.
   *
   * @return array
   *   The processed form element.
   */
  public static function hideExtraSourceFieldComponents($element, FormStateInterface $form_state, $form) {

    // Remove original button added by ManagedFile::processManagedFile().
    if (!empty($element['remove_button'])) {
      $element['remove_button']['#access'] = FALSE;
    }

    // Remove preview added by ImageWidget::process().
    if (!empty($element['preview'])) {
      $element['preview']['#access'] = FALSE;
    }
    $element['#title_display'] = 'none';
    $element['#description_display'] = 'none';

    // Remove the filename display.
    foreach ($element['#files'] as $file) {
      $element['file_' . $file
        ->id()]['filename']['#access'] = FALSE;
    }
    return $element;
  }

  /**
   * Submit handler for the upload button, inside the managed_file element.
   *
   * @param array $form
   *   The form render array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public function uploadButtonSubmit(array $form, FormStateInterface $form_state) {
    $files = $this->entityTypeManager
      ->getStorage('file')
      ->loadMultiple($form_state
      ->getValue('upload', []));
    $this
      ->processInputValues($files, $form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  protected function createMediaFromValue(MediaTypeInterface $media_type, EntityStorageInterface $media_storage, $source_field_name, $file) {
    if (!$file instanceof FileInterface) {
      throw new \InvalidArgumentException('Cannot create a media item without a file entity.');
    }

    // Create a file item to get the upload location.
    $item = $this
      ->createFileItem($media_type);
    $upload_location = $item
      ->getUploadLocation();
    if (!$this->fileSystem
      ->prepareDirectory($upload_location, FileSystemInterface::CREATE_DIRECTORY)) {
      throw new FileWriteException("The destination directory '{$upload_location}' is not writable");
    }
    $file = file_move($file, $upload_location);
    if (!$file) {
      throw new \RuntimeException("Unable to move file to '{$upload_location}'");
    }
    return parent::createMediaFromValue($media_type, $media_storage, $source_field_name, $file);
  }

  /**
   * Create a file field item.
   *
   * @param \Drupal\media\MediaTypeInterface $media_type
   *   The media type of the media item.
   *
   * @return \Drupal\file\Plugin\Field\FieldType\FileItem
   *   A created file item.
   */
  protected function createFileItem(MediaTypeInterface $media_type) {
    $field_definition = $media_type
      ->getSource()
      ->getSourceFieldDefinition($media_type);
    $data_definition = FieldItemDataDefinition::create($field_definition);
    return new FileItem($data_definition);
  }

  /**
   * {@inheritdoc}
   */
  protected function prepareMediaEntityForSave(MediaInterface $media) {

    /** @var \Drupal\file\FileInterface $file */
    $file = $media
      ->get($this
      ->getSourceFieldName($media->bundle->entity))->entity;
    $file
      ->setPermanent();
    $file
      ->save();
  }

  /**
   * Submit handler for the remove button.
   *
   * @param array $form
   *   The form render array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public function removeButtonSubmit(array $form, FormStateInterface $form_state) {

    // Retrieve the delta of the media item from the parents of the remove
    // button.
    $triggering_element = $form_state
      ->getTriggeringElement();
    $delta = array_slice($triggering_element['#array_parents'], -2, 1)[0];

    /** @var \Drupal\media\MediaInterface $removed_media */
    $removed_media = $form_state
      ->get([
      'media',
      $delta,
    ]);
    $file = $removed_media
      ->get($this
      ->getSourceFieldName($removed_media->bundle->entity))->entity;
    if ($file instanceof FileInterface && empty($this->fileUsage
      ->listUsage($file))) {
      $file
        ->delete();
    }
    parent::removeButtonSubmit($form, $form_state);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AddFormBase::$entityTypeManager	protected	property	The entity type manager.
AddFormBase::$libraryUiBuilder	protected	property	The media library UI builder.
AddFormBase::$mediaType	protected	property	The type of media items being created by this form.
AddFormBase::$openerResolver	protected	property	The opener resolver.
AddFormBase::$viewBuilder	protected	property	The media view builder.
AddFormBase::buildActions	protected	function	Returns an array of supported actions for the form.
AddFormBase::buildCurrentSelectionArea	protected	function	Returns a render array containing the current selection.
AddFormBase::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm
AddFormBase::buildMediaLibraryUi	protected	function	Build the render array of the media library UI.
AddFormBase::buildSelectedItemElement	protected	function	Returns a render array for a single pre-selected media item.
AddFormBase::getAddedMediaItems	protected	function	Get all added media items from the form state.
AddFormBase::getBaseFormId	public	function	Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId
AddFormBase::getCurrentMediaItems	protected	function	Get all pre-selected and added media items from the form state.
AddFormBase::getMediaLibraryState	protected	function	Get the media library state from the form state.
AddFormBase::getPreSelectedMediaItems	protected	function	Get all pre-selected media items from the form state.
AddFormBase::getSourceFieldName	protected	function	Returns the name of the source field for a media type.
AddFormBase::isAdvancedUi	protected	function	Determines if the "advanced UI" of the Media Library is enabled.
AddFormBase::preRenderAddedMedia	public	function	Converts the set of newly added media into an item list for rendering.
AddFormBase::processInputValues	protected	function	Creates media items from source field input values.
AddFormBase::submitForm	public	function	Form submission handler. Overrides FormInterface::submitForm
AddFormBase::trustedCallbacks	public static	function	Lists the trusted callbacks provided by the implementing class. Overrides TrustedCallbackInterface::trustedCallbacks
AddFormBase::updateFormCallback	public	function	AJAX callback to update the entire form based on source field input.
AddFormBase::updateLibrary	public	function	AJAX callback to send the new media item(s) to the media library.
AddFormBase::updateWidget	public	function	AJAX callback to send the new media item(s) to the calling code.
AddFormBase::validateForm	public	function	Form validation handler. Overrides FormBase::validateForm
AddFormBase::validateMediaEntity	protected	function	Validate a created media item.
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
FileUploadForm::$elementInfo	protected	property	The element info manager.
FileUploadForm::$fileSystem	protected	property	The file system service.
FileUploadForm::$fileUsage	protected	property	The file usage service.
FileUploadForm::$renderer	protected	property	The renderer service.
FileUploadForm::buildEntityFormElement	protected	function	Builds the sub-form for setting required fields on a new media item. Overrides AddFormBase::buildEntityFormElement
FileUploadForm::buildInputElement	protected	function	Builds the element for submitting source field value(s). Overrides AddFormBase::buildInputElement
FileUploadForm::create	public static	function	Instantiates a new instance of this class. Overrides AddFormBase::create
FileUploadForm::createFileItem	protected	function	Create a file field item.
FileUploadForm::createMediaFromValue	protected	function	Creates a new, unsaved media item from a source field value. Overrides AddFormBase::createMediaFromValue
FileUploadForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId
FileUploadForm::getMediaType	protected	function	Get the media type from the form state. Overrides AddFormBase::getMediaType
FileUploadForm::hideExtraSourceFieldComponents	public static	function	Processes an image or file source field element.
FileUploadForm::prepareMediaEntityForSave	protected	function	Prepares a created media item to be permanently saved. Overrides AddFormBase::prepareMediaEntityForSave
FileUploadForm::processUploadElement	public	function	Processes an upload (managed_file) element.
FileUploadForm::removeButtonSubmit	public	function	Submit handler for the remove button. Overrides AddFormBase::removeButtonSubmit
FileUploadForm::uploadButtonSubmit	public	function	Submit handler for the upload button, inside the managed_file element.
FileUploadForm::validateUploadElement	public	function	Validates the upload element.
FileUploadForm::__construct	public	function	Constructs a new FileUploadForm. Overrides AddFormBase::__construct
FormBase::$configFactory	protected	property	The config factory.	1
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.	1
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. Overrides UrlGeneratorTrait::redirect
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::$linkGenerator	protected	property	The link generator.	1
LinkGeneratorTrait::getLinkGenerator Deprecated	protected	function	Returns the link generator.
LinkGeneratorTrait::l Deprecated	protected	function	Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator Deprecated	public	function	Sets the link generator service.
LoggerChannelTrait::$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::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
RedirectDestinationTrait::$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::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
TrustedCallbackInterface::THROW_EXCEPTION		constant	Untrusted callbacks throw exceptions.
TrustedCallbackInterface::TRIGGER_SILENCED_DEPRECATION		constant	Untrusted callbacks trigger silenced E_USER_DEPRECATION errors.
TrustedCallbackInterface::TRIGGER_WARNING		constant	Untrusted callbacks trigger E_USER_WARNING errors.
UrlGeneratorTrait::$urlGenerator	protected	property	The url generator.
UrlGeneratorTrait::getUrlGenerator Deprecated	protected	function	Returns the URL generator service.
UrlGeneratorTrait::setUrlGenerator Deprecated	public	function	Sets the URL generator service.
UrlGeneratorTrait::url Deprecated	protected	function	Generates a URL or path for a specific route based on the given parameters.

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class FileUploadForm in Drupal 8

Hierarchy

File

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