I am trying to switch form a functional view that edits and submits a form to class based view, UpdateView. I need to access the form. Until now I use this view: @login_required def...

I am trying to switch form a functional view that edits and submits a form to class based view, UpdateView. I need to access the form.

Until now I use this view:

@login_required def edit_sale_view(request, id):     instance = get_object_or_404(Sale, id=id)     form = EditSaleForm(instance=instance)     if request.method == "POST":         form = EditSaleForm(request.POST, instance=instance)          if form.is_valid():             obj = form.save(commit=False)             obj.user = request.user             obj.save()             return JsonResponse({'msg': 'Data saved'})         else:            return JsonResponse({'msg': 'Data not saved'})     return HttpResponse(form.as_p())

Theform.as_p()is important because it is used in the form that is displayed in a modal window.