FilesController::delete PHP Method

    public function delete()
    {
        $fileId = Encryption::decryptIdWithDash($this->request->data("file_id"));
        if (!$this->file->exists($fileId)) {
            return $this->error(404);
        }
        $this->file->deleteById($fileId);
        $this->view->renderJson(array("success" => true));
    }