update credit

app/controllers/transactions/credit_notes_controller.rb

@@ -0,0 +1,18 @@
+class Transactions::CreditNotesController < ApplicationController
+  before_action :set_transactions_sale, only: [:show, :edit, :update, :destroy]
+
+  # GET /transactions/sales
+  # GET /transactions/sales.json
+  def index
+    
+   @sales = Sale.where('payment_status = ?', Sale::SALE_STATUS_OUTSTANDING)
+    
+    
+
+    respond_to do |format|
+      format.html # index.html.erb
+      format.json { render json: @sales }
+    end
+
+ end
+  end