Django how to display object only after filtering?

Question

Django

Hello, I need your help. In this code, all objects from the model are displayed on the page, there is a form by which they are filtered. It is necessary for me that all objects are not initially displayed, but appear only after filtering.
views.py

def abonstat(request):
    abons = Uslugi.objects.all()
    abform = AbonStatForm(request.GET)
    if abform.is_valid():
        if abform.cleaned_data['client']:
            abons = abons.filter(client_id=abform.cleaned_data['client'])
    return render(request, 'clients/abonstat.html',
                  {'abons': abons, 'abform': abform})

Answer 1

?

def abonstat(request):
    abons = {}
    abform = AbonStatForm(request.GET)
    if abform.is_valid():
        if abform.cleaned_data['client']:
            abons = Uslugi.objects.filter(
                            client_id=abform.cleaned_data['client'])
    return render(request, 'clients/abonstat.html',
                  {'abons': abons, 'abform': abform})