Django override __init__ form method using ModelForm-CodePudding

I have a foreign key (zone_set) as a choice field in a form. It should only display current project's zone_set . As you can see, It is not the case since it's displaying a zone_set: I belong to an other project, I should not be displayed here which does not belong to the current project.

Any help please !

Here is my form but it doesn't work

class ODMatrixForm(forms.ModelForm):

    class Meta:
        model = ODMatrix
        # fields = '__all__'
        exclude = ('size', 'locked',)

    def __init__(self, current_project=None, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if current_project:
            queryset = ZoneSet.objects.filter(project=current_project)
            self.fields['zone_set'].queryset = queryset

The view creating the ODMatrix

def create_od_matrix(request, pk):
    """A roadnetwork depends on a project. It
     must be created inside the project"""
    
    current_project = Project.objects.get(id=pk)
    form = ODMatrixForm(initial={'project': current_project})
    if request.method == 'POST':
        print(request)
        od_matrix = ODMatrix(project=current_project)
        # form = ODMatrixForm(request.POST, instance=od_marix)
        form = ODMatrixForm(data=request.POST, instance=od_matrix)
        if form.is_valid():
            form.save()
            messages.success(request, "OD matrix cessfully created")
            return redirect('od_matrix_details', od_matrix.pk)

    context = {
        'project': current_project,
        'form': form}
    return render(request, 'form.html', context)

CodePudding user response：

You created the __init__ as constructor of the Meta class, this should be a constructor of the ODMatrixForm, so:

class ODMatrixForm(forms.ModelForm):
    
    #