/** * {@inheritdoc} */ public static function generateSampleValue(FieldDefinitionInterface $field_definition) { $random = new Random(); $settings = $field_definition->getSettings(); static $images = array(); $min_resolution = empty($settings['min_resolution']) ? '100x100' : $settings['min_resolution']; $max_resolution = empty($settings['max_resolution']) ? '600x600' : $settings['max_resolution']; $extensions = array_intersect(explode(' ', $settings['file_extensions']), array('png', 'gif', 'jpg', 'jpeg')); $extension = array_rand(array_combine($extensions, $extensions)); // Generate a max of 5 different images. if (!isset($images[$extension][$min_resolution][$max_resolution]) || count($images[$extension][$min_resolution][$max_resolution]) <= 5) { $tmp_file = drupal_tempnam('temporary://', 'generateImage_'); $destination = $tmp_file . '.' . $extension; file_unmanaged_move($tmp_file, $destination, FILE_CREATE_DIRECTORY); if ($path = $random->image(drupal_realpath($destination), $min_resolution, $max_resolution)) { $image = File::create(); $image->setFileUri($path); $image->setOwnerId(\Drupal::currentUser()->id()); $image->setMimeType(\Drupal::service('file.mime_type.guesser')->guess($path)); $image->setFileName(drupal_basename($path)); $destination_dir = static::doGetUploadLocation($settings); file_prepare_directory($destination_dir, FILE_CREATE_DIRECTORY); $destination = $destination_dir . '/' . basename($path); $file = file_move($image, $destination, FILE_CREATE_DIRECTORY); $images[$extension][$min_resolution][$max_resolution][$file->id()] = $file; } else { return array(); } } else { // Select one of the images we've already generated for this field. $image_index = array_rand($images[$extension][$min_resolution][$max_resolution]); $file = $images[$extension][$min_resolution][$max_resolution][$image_index]; } list($width, $height) = getimagesize($file->getFileUri()); $values = array('target_id' => $file->id(), 'alt' => $random->sentences(4), 'title' => $random->sentences(4), 'width' => $width, 'height' => $height); return $values; }