change tax in qrpay precreate

app/controllers/foodcourt/qrpay_controller.rb

@@ -35,6 +35,18 @@ class Foodcourt::QrpayController < BaseFoodcourtController
     @member_discount = MembershipSetting.find_by_discount(1)
     @membership_rebate_balance=0
 
+    @changable_tax = true
+    lookup_changable_tax = Lookup.collection_of('changable_tax')
+    if !lookup_changable_tax.empty?
+      lookup_changable_tax.each do |changable_tax|
+        if changable_tax[0].downcase == "change"
+          if changable_tax[1] == '0'
+            @changable_tax = false
+          end
+        end
+      end
+    end
+
     if Sale.exists?(sale_id)
       begin
         @cash = 0.0