Filtering dropdown queryset based on URL parameter

Question

I am building a CRM where I want each client to have multiple plans, and each plan to have multiple notes. When a user creates a new note, I want them to be able to select a relevant plan from a dropdown of plans belonging to the client. From what I can find, I should be able to get the contact_id from the kwargs, but my errors show nothing in kwargs. I know there should be a way to do this, but I can't seem to find it.

Variable    Value
__class__   <class 'lynx.forms.SipNoteForm'>
args    ()
kwargs  {}
self    <SipNoteForm bound=False, valid=Unknown, fields=(sip_plan;note;note_date;fiscal_year;quarter;class_hours;instructor;clients)>

Views.py

@login_required
def add_sip_note(request, contact_id):
    form = SipNoteForm()
    if request.method == 'POST':
        form = SipNoteForm(request.POST)
        if form.is_valid():
            form = form.save(commit=False)
            form.contact_id = contact_id
            form.user_id = request.user.id
            form.save()
            return HttpResponseRedirect(reverse('lynx:client', args=(contact_id,)))
    return render(request, 'lynx/add_sip_note.html', {'form': form})

Forms.py

class SipNoteForm(forms.ModelForm):
    class Meta:
        model = SipNote
        exclude = ('created', 'modified', 'user', 'contact')

    def __init__(self, *args, **kwargs):
        super(SipNoteForm, self).__init__(*args, **kwargs)
        self.fields['sip_plan'].queryset = SipPlan.objects.filter(contact_id=kwargs.get("contact_id"))

Urls.py

path('add-sip-note/<int:contact_id>/', views.add_sip_note, name='add_sip_note'),

Sohaib · Accepted Answer · 2021-01-01 05:53:19Z

1

You are trying to get the kwargs in __init__(self, *args, **kwargs) as

    def __init__(self, *args, **kwargs):
        contact_id = kwargs.pop('contact_id')
        super(SipNoteForm, self).__init__(*args, **kwargs)
        self.fields['sip_plan'].queryset = SipPlan.objects.filter(contact_id=contact_id)

But you are not passing contact_id kwargs to the form while posting. you should pass kwargs to the form you are going to get in __init__(self, *args, **kwargs) such as

@login_required
def add_sip_note(request, contact_id):
    form = SipNoteForm()
    if request.method == 'POST':
        form = SipNoteForm(request.POST, contact_id=contact_id)

edited Jan 1, 2021 at 5:53

answered Dec 31, 2020 at 21:34

Sohaib

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2 Comments

mjpeterson Over a year ago

Thank you! I updated my code to include form = SipNoteForm(request.POST, contact_id=contact_id), but I think I also need it when I definte form earlier, in form = SipNoteForm(). I tried form = SipNoteForm(contact_id=contact_id), form = SipNoteForm(None, contact_id=contact_id) and form = SipNoteForm(request, contact_id=contact_id) but all of those gave me the same error __init__() got an unexpected keyword argument 'contact_id'

mjpeterson Over a year ago

Oh, I figured it out, I wrote my view initiation like contact = {'contact_id': contact_id} form = SipNoteForm(**contact) And in my forms, I popped contact_id out of the kwargs before the __init__, so

def __init__(self, *args, **kwargs):          contact_id = kwargs.pop('contact_id')          super(SipNoteForm, self).__init__(*args, **kwargs)          self.fields['sip_plan'].queryset = SipPlan.objects.filter(contact_id=contact_id)

Thank you for your help, I was really stuck!

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