downloadmultiple as zip

app/controllers/concerns/send_group_order_invoice_pdf.rb

@@ -3,11 +3,15 @@ module Concerns::SendGroupOrderInvoicePdf
 
   protected
 
-  def send_group_order_invoice_pdf(group_order_invoice)
+  def create_invoice_pdf(group_order_invoice)
     invoice_data = group_order_invoice.load_data_for_invoice
     invoice_data[:title] = t('documents.group_order_invoice_pdf.title', supplier: invoice_data[:supplier])
     invoice_data[:no_footer] = true
-    pdf = GroupOrderInvoicePdf.new invoice_data
+    GroupOrderInvoicePdf.new invoice_data
+  end
+
+  def send_group_order_invoice_pdf(group_order_invoice)
+    pdf = create_invoice_pdf(group_order_invoice)
     send_data pdf.to_pdf, filename: pdf.filename, type: 'application/pdf'
   end
 end

app/controllers/group_order_invoices_controller.rb

@@ -56,4 +56,32 @@ class GroupOrderInvoicesController < ApplicationController
   rescue => error
     redirect_back fallback_location: root_path, notice: 'Something went wrong', :alert => I18n.t('errors.general_msg', :msg => error)
   end
+
+  def download_all
+    order = Order.find(params[:order_id])
+
+    invoices = order.group_orders.map(&:group_order_invoice)
+    pdf = {}
+
+    temp_file = Tempfile.new("all_invoices_for_order_#{order.id}.zip")
+
+    Zip::File.open(temp_file.path, Zip::File::CREATE) do |zipfile|
+      invoices.each do |invoice|
+        pdf = create_invoice_pdf(invoice)
+        invoice_file = Tempfile.new("#{pdf.filename}")
+        File.open(invoice_file.path, 'w:ASCII-8BIT') do |file|
+          file.write(pdf.to_pdf)
+        end
+        zipfile.add("#{pdf.filename}", invoice_file.path) unless zipfile.find_entry("#{pdf.filename}")
+      end
+    end
+
+    zip_data = File.read(temp_file.path)
+
+    respond_to do |format|
+      format.html {
+        send_data(zip_data, type: 'application/zip', filename: "#{l order.ends, format: :file}-#{order.supplier.name}-#{order.id}.zip", disposition: 'attachment')
+      }
+    end
+  end
 end