Make a django parent model accessible to formset without displaying it in html

Using Django Forms & APIs
1

I have page1 with two links (‘A’ and ‘B’) on it the specific link that is clicked determines a query parameter /page2/?q=A or /page2/?q=B . On page 2 the user completes an inline formset, the parent form of which has been set to avalue of ‘A’ or ‘B’ depending on the link clicked on the previous page.

I do not want to display the parent form but if this is not displayed then I am unable to successfully save the formset and parent form.

The views.py for page 2 is:

class CaseView(TemplateView):
    model = Case
    template_name = “page2/page2.html”
    
    def get(self, *args, **kwargs):
       # parent form
        case_form = CaseForm
        case_form = CaseForm(initial={'pharm_class_name': p})
       # child formset
        sideeffect_formset = SideeffectFormSet(queryset=SideEffect.objects.none())

        return self.render_to_response(
            { "case_form": case_form,
              "sideeffect_formset": sideeffect_formset,
              "sideeffect_formsethelper": SideEffectFormSetSetHelper,
            }
        )

    def post(self, *args, **kwargs):
        form = CaseForm(data=self.request.POST)
        sideeffect_formset = SideeffectFormSet(data=self.request.POST)
        
        if form.is_valid():
            case_instance = form.save(commit=False)
            if self.request.user.is_authenticated:
                case_instance.user = self.request.user
            case_instance.save()
        if sideeffect_formset.is_valid():
            sideeffect_name = sideeffect_formset.save(commit=False)
            for sideeffect in sideeffect_name:
                sideeffect.case = case_instance
                sideeffect.save()
            return redirect(
                reverse(
                    "results",
                    kwargs={"case_id": case_instance.case_id},
                )
            )

I want to be able to save CaseForm and have it available for the childformset without actually displaying CaseForm in the html

2

If the form is not being displayed, why do you want to save it?

You’ve got a reference to a model, that’s all you need to be able to save the formset relating to that model.

3

Thanks @KenWhitesell had managed to confuse myself, as you suggest just creating a model instance with the query parameter fixed it