Story#107571572 can create SEB bank request

app/controllers/registrar/payments_controller.rb

@@ -1,26 +1,25 @@
 class Registrar::PaymentsController < RegistrarController
+  protect_from_forgery except: :back
+
   skip_authorization_check # actually anyone can pay, no problems at all
   skip_before_action :authenticate_user!, :check_ip, only: [:back]
   before_action :check_bank
 
   # to handle existing model we should
-  # get invoice_id and then get reference_number
+  # get invoice_id and then get number
   # build BankTransaction without connection with right reference number
   # do not connect transaction and invoice
   def pay
     invoice = Invoice.find(params[:invoice_id])
-
-    render text: "You are trying to pay with #{params[:bank]} for #{invoice.reference_no}"
+    @bank_link = BankLink::Request.new(params[:bank], invoice, self)
+    @bank_link.make_transaction
   end
 
-  def cancel
-
-  end
 
   # connect invoice and transaction
   # both back and IPN
   def back
-
+    @bank_link = BankLink::Response.new(params[:bank], params)
   end
 
   private