ROR中的XLS报告

Question

我想在rails上使用ruby生成Excel和PDF报告，但我在两个报告中都显示了24,278个条目，因此显示错误。如何解决这个错误。 控制器代码 - （适用于excel）

def from_date_wise_xls
    @start = params[:day]
    @end = params[:to_date]
    @present = params[:present]
    @employee_attendances = EmployeeAttendance.where(present: @present,day: @start..@end)
    respond_to do |format|
    format.xls {render template: 'employee_attendances/from_date_wise_xls.xls.erb'}
  end
end

（对于PDF） -

def from_date_wise_pdf
   @start = params[:day]
    @end = params[:to_date]
    @present = params[:present]
    @employee_attendances = EmployeeAttendance.where(present: @present,day: @start..@end)

     respond_to do |format|
        format.html
        format.pdf do
        render :pdf => 'from_date_wise_pdf',
        layout: '/layouts/pdf.html.erb',
        :template => 'employee_attendances/from_date_wise_pdf.pdf.erb',
        :orientation      => 'Landscape', # default , Landscape
        :page_height      => 1000,
        :dpi              => '300',
        :margin           => {:top    => 10, # default 10 (mm)
                      :bottom => 10,
                      :left   => 20,
                      :right  => 20},
        :show_as_html => params[:debug].present?
      end
    end
end