gistfile1.rb

  # cart_controller.rb

  def paymentcheckout
    @value = "version=2<LF>cdr=0<LF>"
    
    if params['MAC']
      oTpe = CMCIC_Tpe.new("FR", checkout_cart_url("fr", 4))
      oHmac = CMCIC_Hmac.new(oTpe)
      
      sChaineMAC = [oTpe.sNumero, params["date"], params['montant'], params['reference'], params['texte-libre'], oTpe.sVersion, params['code-retour'], params['cvx'], params['vld'], params['brand'], params['status3ds'], params['numauto'], params['motifrefus'], params['originecb'], params['bincb'], params['hpancb'], params['ipclient'], params['originetr'], params['veres'], params['pares']].join('*') + "*";
      
      if oHmac.isValidHmac?(sChaineMAC, params['MAC'])
        case params['code-retour']
          when "Annulation"
           
          when "payetest"
            User.find(params['reference'].split("-")[1].to_i).checkout(1)
            @value = "version=2<LF>cdr=1<LF>"
          when "paiement"
            User.find(params['reference'].split("-")[1].to_i).checkout(1)
            @value = "version=2<LF>cdr=1<LF>"
        end
        sResult = "0"
      else
        sResult = "1\n" + sChaineMAC
      end
    end

    render :text => @value
  end
  
  
  
  
  
  # routes.rb
  
  resources :cart do
    post :paymentcheckout, on: :collection
    get  :paymentcheckout, on: :collection
  end