Netbox | Add a Tab to plugin-view

[LukasFraunbaum]

Hello I am currently trouble-shooting and clueless what's different from Netbox Core Model Tab Addition, To creating a Tab within my Plugin View. Creating a Tab via register_model_view for a Core Model(Virtualization/virtual-machines) worked, but doing the same on a view of my plugin won't work as wanted.

Plugin-Tab is not visible if a name, current state, is provided. If none is passed it is visible but pointing towards the current view of given detail-model page.

No URL-Path where added for the tabs due to netbox seeming to create a path itself , as far as for the Core-Model Tab (Don't know if it changes when working with plugins)

working code from Core Model TAB Add:

@register_model_view(VirtualMachine, name='usedbysoftware')
class SoftwareTabVirtualMachineView(generic.ObjectView):
    model = VirtualMachine
    queryset = VirtualMachine.objects.all()

    template_name = 'netbox_applications/virtualmachine_tab_softwarelist.html'
    tab = ViewTab(
        label='Software List',
        badge=lambda obj: models.Software.objects.filter(virtualmachine=obj).count() if obj else 0,
    )

    def get_extra_context(self, request, instance):
        # Fetch the current virtual machine from the URL
        vm_id = self.kwargs['pk']
        virtualmachine = get_object_or_404(VirtualMachine, pk=vm_id)
        queryset = models.Software.objects.filter(virtualmachine=virtualmachine)
        no_software = queryset.count() == 0

        return {
            'virtualmachine': virtualmachine,
            'software_list': queryset,
            'no_software': no_software,  
        }
    

Code not Working:

@register_model_view(models.Anbieter, 'providessoftware')
class AnbieterProvidesSoftwareView(AnbieterView):
    model = models.Anbieter
    queryset = models.Anbieter.objects.all()

    tab = ViewTab(
        label='Software List',
    )

    def get_extra_context(self, request, instance):
        # Fetch the current virtual machine from the URL
        anbieter_id = self.kwargs['pk']
        anbieter = get_object_or_404(models.Anbieter, pk=anbieter_id)
        queryset = models.Software.objects.filter(anbieter=anbieter)
        no_software = queryset.count() == 0

        return {
            'anbieter': anbieter,
            'software_list': queryset,
            'no_software': no_software,  
        }

Help & Ideas on how to fix it would be appriciated