Limit paid amount for JCB, Visa and Master Card

app/controllers/origami/jcb_controller.rb

@@ -2,6 +2,21 @@ class Origami::JcbController < BaseOrigamiController
 
   def index
     @sale_id = params[:sale_id]
+
+    # limit jcb_amount
+    sale_data = Sale.find_by_sale_id(@sale_id)
+    total = sale_data.grand_total
+    @jcbcount = 0
+    others = 0
+    sale_data.sale_payments.each do |sale_payment|
+        if sale_payment.payment_method == "jcb"
+          @jcbcount = @jcbcount + sale_payment.payment_amount
+        else
+          others = others + sale_payment.payment_amount
+        end
+    end
+    @can_jcb = total - @jcbcount - others
+
   end
 
   def create