[Answered ]-Which classes should I use to modify an object without a form and UpdateView involved using Django?

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I disagree with your approach of not using a FormView. The confirmation actually is a Form (even if it does only have a Confirm button) — not a ModelForm but a normal django form that confirms your selection.

What I propose doing instead is inherit from FormView and also add a SingleObjectMixin. Something like this (this is from a Cancel method I’d implemented in a different project but you’ll get the idea):

class CancelFormView(FormView, SingleObjectMixin):
    queryset = models.Process.all()
    form_class = forms.YesNoForm
    template_name = 'cancel.html'

    def form_valid(self, form):
        obj = self.get_object()
        yesno = form.cleaned_data['yesno']
        if yesno=='YES':
            # Do something with the object
            # the update_fields method you define should be a method of your object
            obj.cancel()
            messages.info(self.request, u"Cancel ok!")
        else:
            messages.info(self.request, u"Cancel aborted!")
        return HttpResponseRedirect(reverse("process_view", args=[obj.id] ))

As you see, you just need to override the form_valid method of your Class and define the queryset, form_class and template_name attributes. You then just update your fields (or do whatever else you like) if the user has actually confirmed that he wants it (he has selected ‘YES’ in the form). I believe that this is the most DRY way of implementing your requirements.

👤Serafeim

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