CODEWITHSUNDEEP
djangodjango-modelsdjango-forms
Bea
Bea

Reputation: 278

How to pass a value from the view to a ModelForm

I'm trying to get the Id to filter items to show. After several tutorials and docs, I'm still not get through...

Is it possible to do it ?

Here is the form:

class MakeChecklistDone(forms.ModelForm):
    def __init__(self, task, *args, **kwargs):
        super(MakeChecklistDone, self).__init__(*args, **kwargs)

    #title = forms.CharField(max_length = 32)
    choices = forms.ModelMultipleChoiceField(
                    widget = forms.CheckboxSelectMultiple(), 
                    queryset=CheckUpList.objects.all().filter(done=False, task=???)
                    )
    class Meta:
        model = CheckUpList
        fields = ['choices', ]

I'm using the bellow view :

def task_detail(request, pk):
    template_name = 'task/task-detail.html'
    task = Task.objects.get(pk=pk)
    ...
    if request.method == 'POST':
    ...
    else:
    form_checkUpList = MakeChecklistDone(request.POST, initial={'task': 11 })

But it seems I'm doing something wrong... Any helps will be marvellous.

Upvotes: 0

Views: 182

Answers (2)

Bea
Bea

Reputation: 278

ok, Thanks Salma. I made a confusion between "CBV" and "View function".

def task_detail(request, pk):
    template_name = 'task/task-detail.html'
    task = Task.objects.get(pk=pk)
    ..
    if request.method == 'POST':
    ...
    else:
    form_checkUpList = MakeChecklistDone(task=task, request.POST)

For the form:

class MakeChecklistDone(forms.ModelForm):
    choices = forms.ModelMultipleChoiceField(widget = forms.CheckboxSelectMultiple(), queryset=None)
    class Meta:
        model = CheckUpList
        fields = ['choices', ]

    def __init__(self, task, *args, **kwargs):
        super(MakeChecklistDone, self).__init__(*args, **kwargs)
        self.fields['choices'].queryset = CheckUpList.objects.all().filter(done=False, task=task))

Upvotes: 0

Salma
Salma

Reputation: 321

Instead of using a view function using a view class (Create view, update view, listing v) and use the get_form_kwargs method to pass a value to the form like below:

class task_detail(LoginRequiredMixin,
                     UpdateView):
    template_name = 'learningcenters/lc/form.html'
    form_class = LearningCenterForm
    queryset = CheckUpList.objects.all()

    def get_object(self):
        id_ = self.kwargs.get("pk")
        return get_object_or_404(task_detail, id=id_)


    def get_form_kwargs(self, *args, **kwargs):
        kwargs = super().get_form_kwargs(*args, **kwargs)
        kwargs['task'] = 11
        return kwargs

In form in init:

    def __init__(self, task, *args, **kwargs):
        super(MakeChecklistDone, self).__init__(*args, **kwargs)
        choices = forms.ModelMultipleChoiceField(
                    widget = forms.CheckboxSelectMultiple(), 
                    queryset=CheckUpList.objects.all().filter(done=False, task=task)
                    )

Upvotes: 1

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