if request.method == 'POST':
        criterio = request.POST['empresa']
        enter = Enterprise.objects.filter(enterprise_name__contains=criterio)
       # personas = Enterprise.objects.get(persons__name__contains=criterio)
        gente = Cliente.objects.filter(name__contains=criterio)
        #Cliente.objects.filter(name__contains=s)
        carnet = Cliente.objects.filter(idnum__contains=criterio)
        nit = Enterprise.objects.filter(nit__contains=criterio)
        if enter.count() == 0 and carnet.count() == 0 and nit.count() ==0 and gente.count() == 0:
            err = True
            return render(request, 'results.html', {'err': err, 'criterio': criterio})
        else:
            return render(request, 'results.html', {'cliente': enter, 'carnets': carnet, 'nit': nit, 'gente': gente})