App\Http\Controllers\ImportController::doImport PHP Method

    public function doImport()
    {
        $source = Input::get('source');
        $files = [];
        foreach (ImportService::$entityTypes as $entityType) {
            if (Input::file("{$entityType}_file")) {
                $files[$entityType] = Input::file("{$entityType}_file")->getRealPath();
                if ($source === IMPORT_CSV) {
                    Session::forget("{$entityType}-data");
                }
            }
        }
        if (!count($files)) {
            Session::flash('error', trans('texts.select_file'));
            return Redirect::to('/settings/' . ACCOUNT_IMPORT_EXPORT);
        }
        try {
            if ($source === IMPORT_CSV) {
                $data = $this->importService->mapCSV($files);
                return View::make('accounts.import_map', ['data' => $data]);
            } elseif ($source === IMPORT_JSON) {
                $results = $this->importService->importJSON($files[IMPORT_JSON]);
                return $this->showResult($results);
            } else {
                $results = $this->importService->importFiles($source, $files);
                return $this->showResult($results);
            }
        } catch (Exception $exception) {
            Utils::logError($exception);
            Session::flash('error', $exception->getMessage());
            return Redirect::to('/settings/' . ACCOUNT_IMPORT_EXPORT);
        }
    }