打包订单单据发给货代

def download
    checked_file = params[:checked_file]&.split ","
    zip = PackageZip.new(@order_items, checked_file)
    zip.generate_zip do |zip_path|
      send_file(
        zip_path,
        filename: "iChemical-Package Document-Order-#{rand(99999)}.zip",
        type: "application/zip",
        disposition: "attachment"
      )
    end
    zip.delete_temp_zip
  end


require 'zip'
class PackageZip

  def initialize(order_items, checked_file)
    @order_items = order_items
    @order = order_items.last&.order
    @checked_file = checked_file
    @temp_dir = Dir.mktmpdir
    @zip_list = []
    @zip_name_list = []
  end

  def generate_zip(&block)
    chooise_file @order
    zip_path = File.join(@temp_dir, 'temp.zip')
    Zip::File.open(zip_path, Zip::File::CREATE) do |zipfile|
      @zip_name_list.each_with_index do |name, index|
        zipfile.get_output_stream(name) do |io|
          io.write @zip_list[index]
        end
      end
    end
    block.call zip_path
    ensure
  end

  def chooise_file(order)
    checked_file = @checked_file || order.order_items&.first&.package_documents&.first&.checked_file&.split(",")
    if !checked_file.nil?
      checked_file.each do |file|
        attachments = order.order_attachments.where(file_type: file)
        @ufile = attachments.last
        case file
        when "coa"
          if @ufile.nil?
            @order_items.each do |item|
              qitem = nil
              if item.order.type == "OfflineOrder"
                chemical = item.chemical
                certificates = item.quotation_item.certificates.pluck(:item, :specification, :result).compact
                qitem = item.quotation_item
              else
                chemical = item.chemical
                certificates = item.certificates.pluck(:item, :specification, :result).compact
                qitem = item
              end
              certificate_pdf = CertificatePdf.new(certificates, chemical, qitem).render
              certificate_pdf_name = "cctv-COA-CAS[#{chemical.cas}]-#{rand(99999)}.pdf"
              @zip_name_list.push certificate_pdf_name
              @zip_list.push certificate_pdf
            end
          else
            certificate_pdf_name = @ufile.attachment_filename
            certificate_pdf = IO.read("#{Rails.root}/tmp/uploads/store/" + @ufile.attachment_id)
            @zip_name_list.push certificate_pdf_name
            @zip_list.push certificate_pdf
          end
        when "msds"
          if attachments.present?
            attachments.zip_file do |zip_path|
              @zip_name_list.push "cctv-MSDS-Package-Order-#{rand(99999)}.zip"
              @zip_list.push IO.read zip_path
            end
          else
            @order_items.each do |item|
              msds = Msds.new(item)
              result, flag = msds.generate
              msds_file_name = 'cctv' << (flag ? '' : '-GT') << '-MSDS-' << item.order_item_no << '.pdf'
              msds_file = msds.render
              @zip_name_list.push msds_file_name
              @zip_list.push msds_file
            end
          end
        when "pi"
          if ProformaInvoiceRecord.updated.find_by(order_id: @order.id).present?
            proforma_invoice_xls_name = "cctv-Proforma Invoice-Order-#{order.uuid}-#{rand(99999)}.xls"
            r = ProformaInvoiceRecord.create_with_auto(@order_items, nil, nil, "modified")
            proforma_invoice_xls = PerformanceInvoiceExcel.new(r).render
          else
            proforma_invoice_xls_name = "cctv-Proforma Invoice-Order-#{order.uuid}-#{rand(99999)}.xls"
            r = ProformaInvoiceRecord.create_with_auto(@order_items, nil, nil, "original")
            proforma_invoice_xls = PerformanceInvoiceExcel.new(r).render
          end
          @zip_name_list.push proforma_invoice_xls_name
          @zip_list.push proforma_invoice_xls
        when "ci"
          if CommercialInvoiceRecord.updated.find_by(order_id: @order.id).present?
            invoice_xls_name = "cctv Invoice-#{order.uuid}-#{rand(99999)}.xls"
            r = CommercialInvoiceRecord.create_with_auto(@order_items, nil, nil, "modified")
            invoice_xls = CommercialInvoiceExcel.new(r).render
          else
            invoice_xls_name = "cctv Invoice-#{order.uuid}-#{rand(99999)}.xls"
            r = CommercialInvoiceRecord.create_with_auto(@order_items, nil, nil, "original")
            invoice_xls = CommercialInvoiceExcel.new(r).render
          end
          @zip_name_list.push invoice_xls_name
          @zip_list.push invoice_xls
        when "pl"
          if PackageListRecord.updated.find_by(order_id: @order.id).present?
            pack_list_xls_name = "cctv-Packing List-Order-#{order.uuid}-#{rand(99999)}.xls"
            r = PackageListRecord.create_with_auto(@order_items, nil, nil, "modified")
            pack_list_xls = PackingListExcel.new(r).render
          else
            pack_list_xls_name = "cctv-Packing List-Order-#{order.uuid}-#{rand(99999)}.xls"
            r = PackageListRecord.create_with_auto(@order_items, nil, nil, "original")
            pack_list_xls = PackingListExcel.new(r).render
          end
          @zip_name_list.push pack_list_xls_name
          @zip_list.push pack_list_xls
        when "qc_report"
          @order_items.each do |item|
            testing_records = item.testing_records
            if testing_records.present?
              testing_records.each do |file|
                if file.file_path.present?
                  file_name = file.file_name
                  file = file.file_path
                  new_file = download_img(file, file_name)
                  if  new_file.present?
                    @zip_name_list.push file_name
                    @zip_list.push IO.read new_file
                    if File.exist?(new_file)
                      File.delete(new_file)
                    end
                  end
                end
              end
            end
          end
        else
          if [email protected]?
            file_name = @ufile.attachment_filename
            file = "#{Rails.root}/tmp/uploads/store/" + @ufile.attachment_id
            @zip_name_list.push file_name
            @zip_list.push IO.read file
          end
        end
      end
    end
  end

  ########下载图片
  def download_img(img_url,file_name)
    image_temp_dir = "tmp/uploads/qc_report/"
    FileUtils.mkdir(image_temp_dir) unless File.exists?(image_temp_dir)
    begin
      _file_path = image_temp_dir+file_name
      unless File.exists?(_file_path)
        img_file = open(img_url) { |f| f.read }
        open(image_temp_dir+file_name, "wb") { |f| f.write(img_file) }
      end
      return _file_path
    rescue => err
      puts err
      return ''
    end
  end


  def delete_temp_zip
    Thread.new do
      sleep 2
      FileUtils.rm_rf @temp_dir if @temp_dir
    end
  end

end

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转载自schooltop.iteye.com/blog/2430446
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