silverstripe / silverstripe-asset-admin

        $data['Parent'] = $parentRecord;

        $tmpFile = $request->postVar('Upload');

        if (!$upload->validate($tmpFile)) {

            $result = ['message' => null];

            $errors = $upload->getErrors();

            if ($message = array_shift($errors)) {

                $result['message'] = [

                    'type' => 'error',

                    'value' => $message,

                ];

            }

            return (new HTTPResponse(json_encode($result), 400))

                ->addHeader('Content-Type', 'application/json');

        }

        // TODO Allow batch uploads

        $fileClass = File::get_class_for_file_extension(File::get_file_extension($tmpFile['name']));

        }

        $tmpFile = $data['Upload'];

        if (!$upload->validate($tmpFile)) {

            $result = ['message' => null];

            $errors = $upload->getErrors();

            if ($message = array_shift($errors)) {

                $result['message'] = [

                    'type' => 'error',

                    'value' => $message,

                ];

            }

            return (new HTTPResponse(json_encode($result), 400))

                ->addHeader('Content-Type', 'application/json');

        }

        $folder = $parentRecord ? $parentRecord->getFilename() : '/';