order item edit and print

app/models/printer/order_queue_printer.rb

@@ -1,6 +1,6 @@
 class Printer::OrderQueuePrinter < Printer::PrinterWorker
 
-  def print_order_item(print_settings,oqs,order_id, item_code, print_status, options="")
+  def print_order_item(print_settings,oqs,order_id, instance_code, print_status, options="")
     #Use CUPS service
     #Generate PDF
     #Print
@@ -10,7 +10,7 @@ class Printer::OrderQueuePrinter < Printer::PrinterWorker
       print_settings.save!
     end
 
-    order_item =  print_query('order_item', item_code) #OrderItem.find_by_item_code(item_code)  
+    order_item =  print_query('order_item', instance_code) #OrderItem.find_by_item_code(item_code)  
 
     filename = "tmp/order_item.pdf" 
 

app/models/printer/printer_worker.rb

@@ -33,7 +33,6 @@ class Printer::PrinterWorker
   end
 
   def print(file_path,printer_destination = nil )
-
     if printer_destination.nil?
       printer_destination = self.printer_destination
     end

app/models/printer/receipt_printer.rb

@@ -74,6 +74,10 @@ class Printer::ReceiptPrinter < Printer::PrinterWorker
 
     # print as print copies in printer setting
     count = printer_settings.print_copies
+
+    # override print copies for print worker loop
+    print_settings.print_copies = 1
+    print_settings.save!
     begin
       if count == 1
         pdf.render_file "tmp/receipt_bill_#{sale_data.receipt_no}.pdf"