def callbackOK_oferta(request):
   user = request.user
   reservas = Oferta_reserva.objects.filter(user=user)
   for reserva in reservas:
       if reserva.estado == 'pendiente':
           reserva.estado = 'completado'
           reserva.save()
    return render_to_response('reserva_pago.html', locals(), context_instance=RequestContext(request))