public function FileUploadResource::post in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/file/src/Plugin/rest/resource/FileUploadResource.php \Drupal\file\Plugin\rest\resource\FileUploadResource::post()
2. 10 core/modules/file/src/Plugin/rest/resource/FileUploadResource.php \Drupal\file\Plugin\rest\resource\FileUploadResource::post()

Creates a file from an endpoint.

Parameters

\Symfony\Component\HttpFoundation\Request $request: The current request.

string $entity_type_id: The entity type ID.

string $bundle: The entity bundle. This will be the same as $entity_type_id for entity types that don't support bundles.

string $field_name: The field name.

Return value

\Drupal\rest\ModifiedResourceResponse A 201 response, on success.

Throws

\Symfony\Component\HttpKernel\Exception\HttpException Thrown when temporary files cannot be written, a lock cannot be acquired, or when temporary files cannot be moved to their new location.

File

core/modules/file/src/Plugin/rest/resource/FileUploadResource.php, line 223

Class

FileUploadResource

File upload resource.

Namespace

Drupal\file\Plugin\rest\resource

Code

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.
  $file_uri = "{$destination}/{$prepared_filename}";
  $temp_file_path = $this
    ->streamUploadData();
  $file_uri = $this->fileSystem
    ->getDestinationFilename($file_uri, FileSystemInterface::EXISTS_RENAME);

  // Lock based on the prepared file URI.
  $lock_id = $this
    ->generateLockIdFromFileUri($file_uri);
  if (!$this->lock
    ->acquire($lock_id)) {
    throw new HttpException(503, sprintf('File "%s" is already locked for writing'), NULL, [
      'Retry-After' => 1,
    ]);
  }

  // Begin building file entity.
  $file = File::create([]);
  $file
    ->setOwnerId($this->currentUser
    ->id());
  $file
    ->setFilename($prepared_filename);
  $file
    ->setMimeType($this->mimeTypeGuesser
    ->guess($prepared_filename));
  $file
    ->setFileUri($file_uri);

  // Set the size. This is done in File::preSave() but we validate the file
  // before it is saved.
  $file
    ->setSize(@filesize($temp_file_path));

  // Validate the file entity against entity-level validation and field-level
  // validators.
  $this
    ->validate($file, $validators);

  // Move the file to the correct location after validation. Use
  // FileSystemInterface::EXISTS_ERROR as the file location has already been
  // determined above in FileSystem::getDestinationFilename().
  try {
    $this->fileSystem
      ->move($temp_file_path, $file_uri, FileSystemInterface::EXISTS_ERROR);
  } catch (FileException $e) {
    throw new HttpException(500, 'Temporary file could not be moved to file location');
  }
  $file
    ->save();
  $this->lock
    ->release($lock_id);

  // 201 Created responses return the newly created entity in the response
  // body. These responses are not cacheable, so we add no cacheability
  // metadata here.
  return new ModifiedResourceResponse($file, 201);
}