function file_managed_file_save_upload in Drupal 8

Same name and namespace in other branches

1. 7 modules/file/file.module \file_managed_file_save_upload()
2. 9 core/modules/file/file.module \file_managed_file_save_upload()
3. 10 core/modules/file/file.module \file_managed_file_save_upload()

Saves any files that have been uploaded into a managed_file element.

Parameters

array $element: The FAPI element whose values are being saved.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array|false An array of file entities for each file that was saved, keyed by its file ID. Each array element contains a file entity. Function returns FALSE if upload directory could not be created or no files were uploaded.

1 call to file_managed_file_save_upload()

ManagedFile::valueCallback in core/modules/file/src/Element/ManagedFile.php

Determines how user input is mapped to an element's #value property.

File

core/modules/file/file.module, line 1448

Defines a "managed_file" Form API field and a "file" field for Field module.

Code

function file_managed_file_save_upload($element, FormStateInterface $form_state) {
  $upload_name = implode('_', $element['#parents']);
  $all_files = \Drupal::request()->files
    ->get('files', []);
  if (empty($all_files[$upload_name])) {
    return FALSE;
  }
  $file_upload = $all_files[$upload_name];
  $destination = isset($element['#upload_location']) ? $element['#upload_location'] : NULL;
  if (isset($destination) && !\Drupal::service('file_system')
    ->prepareDirectory($destination, FileSystemInterface::CREATE_DIRECTORY)) {
    \Drupal::logger('file')
      ->notice('The upload directory %directory for the file field %name could not be created or is not accessible. A newly uploaded file could not be saved in this directory as a consequence, and the upload was canceled.', [
      '%directory' => $destination,
      '%name' => $element['#field_name'],
    ]);
    $form_state
      ->setError($element, t('The file could not be uploaded.'));
    return FALSE;
  }

  // Save attached files to the database.
  $files_uploaded = $element['#multiple'] && count(array_filter($file_upload)) > 0;
  $files_uploaded |= !$element['#multiple'] && !empty($file_upload);
  if ($files_uploaded) {
    if (!($files = _file_save_upload_from_form($element, $form_state))) {
      \Drupal::logger('file')
        ->notice('The file upload failed. %upload', [
        '%upload' => $upload_name,
      ]);
      return [];
    }

    // Value callback expects FIDs to be keys.
    $files = array_filter($files);
    $fids = array_map(function ($file) {
      return $file
        ->id();
    }, $files);
    return empty($files) ? [] : array_combine($fids, $files);
  }
  return [];
}