update check user

app/controllers/transactions/shift_sales_controller.rb

@@ -1,6 +1,7 @@
 class Transactions::ShiftSalesController < ApplicationController
   load_and_authorize_resource except: [:create]
   before_action :set_transactions_shift_sale, only: [:show, :edit, :update, :destroy]
+  before_action :check_user
 
   def index
 
@@ -53,6 +54,12 @@ class Transactions::ShiftSalesController < ApplicationController
     end
   end
 
+  def check_user
+    if current_user.nil?
+      redirect_to root_path
+    end
+  end
+  
   private
     # Use callbacks to share common setup or constraints between actions.
     def set_transactions_shift_sale