Отображение значений формы на той же странице

views.py
def index(request):
    submitbutton= request.POST.get("submit")
    firstname=''
    form= UserForm(request.POST or None)
    if form.is_valid():
        firstname= form.cleaned_data.get("first_name")
    context1= {'form': form, 'firstname': firstname, 'submitbutton': submitbutton}
    return render(request, 'sale/equipment.html', context1)

class ShowEquipment(DataMixin, DetailView, FormView, ListView):
    model = Equipment
    template_name = 'sale/equipment.html'
    slug_url_kwarg = 'equipment_slug'
    context_object_name = 'equipment'
    object_list= 'equipment_slug'
 
    def get_context_data(self, *, object_list=None, **kwargs):
        context = super().get_context_data(**kwargs)
        c_def = self.get_user_context(title=context['equipment'])
        return dict(list(context.items()) + list(c_def.items()))
 
    def get_queryset (self):
        if self.kwargs['equipment_slug'] == 'emkost':
            self.form_class = ViborEMForm
        elif self.kwargs['equipment_slug'] == 'los-kpn':             
            self.form_class = UserForm
            def index(request):
                submitbutton= request.POST.get("submit")
                firstname=''
                form= UserForm(request.POST or None)
                if form.is_valid():
                    firstname= form.cleaned_data.get("first_name")
                context1= {'form': form, 'firstname': firstname, 'submitbutton': submitbutton}
                return render(request, 'sale/equipment.html', context1)
        return super(ShowEquipment, self, ).get_queryset()