controller:

def export
        @games = @@data
        book = Spreadsheet::Workbook.new
        sheet1 = book.create_worksheet name: '场次'
        sheet1.row(0).concat %w(序号 主题 日期 时间)
        row_num = 1
        @games.each do |game|
            sheet1.row(row_num).concat [row_num,
                                        Theme.find(game.theme_id).name,
                                        game.created_at.getlocal.to_s(:month_and_year),
                                        game.created_at.getlocal.to_s(:time)]
            row_num += 1
        end

        xls_report = StringIO.new
        book.write xls_report

        send_data(xls_report.string,
                  filename: 'your_excel_file_name.xls',
                  type: 'application/vnd.ms-excel',
                  disposition: 'inline')
        redirect_to (request.env['HTTP_REFERER'])

    end

view:

<%= link_to '导出', "/export", class: "btn btn-info btn-lg glyphicon glyphicon-export", "aria-hidden": "true",
            data: { confirm: '确定导出吗？' }%>

我的页面里有一个导出按钮，指向 export 控制器。 但是我想重新回到刚才的页面而不是

/export

这要如何操作呢