getUploadLocation example

/** * {@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 = $this->fileRepository->move($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);
  }

  

$defaults = [
      'fids' => [],
      'display' => (bool) $field_settings['display_default'],
      'description' => '',
    ];

    // Essentially we use the managed_file type, extended with some     // enhancements.     $element_info = $this->elementInfo->getInfo('managed_file');
    $element += [
      '#type' => 'managed_file',
      '#upload_location' => $items[$delta]->getUploadLocation(),
      '#upload_validators' => $items[$delta]->getUploadValidators(),
      '#value_callback' => [static::class, 'value'],
      '#process' => array_merge($element_info['#process'], [[static::class, 'process']]),
      '#progress_indicator' => $this->getSetting('progress_indicator'),
      // Allows this field to return an array instead of a single value.       '#extended' => TRUE,
      // Add properties needed by value() and process() methods.       '#field_name' => $this->fieldDefinition->getName(),
      '#entity_type' => $items->getEntity()->getEntityTypeId(),
      '#display_field' => (bool) $field_settings['display_field'],
      '#display_default' => $field_settings['display_default'],
      

  public function handleFileUploadForField(FieldDefinitionInterface $field_definition, $filename, AccountInterface $owner) {
    assert(is_a($field_definition->getClass(), FileFieldItemList::class, TRUE));
    $settings = $field_definition->getSettings();
    $destination = $this->getUploadLocation($settings);

    // Check the destination file path is writable.     if (!$this->fileSystem->prepareDirectory($destination, FileSystemInterface::CREATE_DIRECTORY)) {
      throw new HttpException(500, 'Destination file path is not writable');
    }

    $validators = $this->getUploadValidators($field_definition);

    $prepared_filename = $this->prepareFilename($filename, $validators);

    // Create the file.

  public function post(Request $request, $entity_type_id, $bundle, $field_name) {
    $filename = $this->validateAndParseContentDispositionHeader($request);

    $field_definition = $this->validateAndLoadFieldDefinition($entity_type_id, $bundle, $field_name);

    $destination = $this->getUploadLocation($field_definition->getSettings());

    // Check the destination file path is writable.     if (!$this->fileSystem->prepareDirectory($destination, FileSystemInterface::CREATE_DIRECTORY)) {
      throw new HttpException(500, 'Destination file path is not writable');
    }

    $validators = $this->getUploadValidators($field_definition);

    $prepared_filename = $this->prepareFilename($filename, $validators);

    // Create the file.