addColumn(trans('firefly.date'), 'date'); $chart->addColumn(trans('firefly.balance'), 'number'); /** @var Collection $set */ $set = $repository->getEventSummarySet($piggyBank); $sum = 0; foreach ($set as $entry) { $sum += floatval($entry->sum); $chart->addRow(new Carbon($entry->date), $sum); } $chart->generate(); return Response::json($chart->getData()); } }