private function relationData()
    {
        $onData = collect($this->data)->reject(function ($value, $key) {
            return !str_contains($key, 'on');
        });

        $foreignKeys = collect($this->data)->reject(function ($value, $key) {
            return !str_contains($key, 'tbl');
        });

        $this->onData = array_values($onData->toArray());

        $this->foreignKeys = array_values($foreignKeys->toArray());
    }