gistfile1.txt

views.py:

class UpdateView(forms.ModalFormView):
    form_class = project_forms.UpdateWorkload
    template_name = 'update_workload.html'
    context_object_name = 'workload'
    success_url = reverse_lazy('index')

    def get_context_data(self, **kwargs):
        context = super(UpdateView, self).get_context_data(**kwargs)
        context["instance_id"] = self.kwargs['instance_id']
        return context

    @memoized.memoized_method
    def _get_object(self, *args, **kwargs):
        workload_id = self.kwargs['id']
        try:
            print workload_id
        except Exception:
            redirect = self.success_url
            msg = _('Unable to retrieve Workload.')
            exceptions.handle(self.request, msg, redirect=redirect)

urls.py:

WORKLOADS = r'(?P<instance_id>[^/]+)/%s$'

urlpatterns = patterns('',
    url(r'^create/$', views.CreateView.as_view(), name='create'),
    url(WORKLOADS % 'update', views.UpdateView.as_view(), name='update'),
    url(r'^$', views.IndexView.as_view(), name='index'),
)

tables.py:

class UpdateWorkload(tables.LinkAction):
    name = "update"
    verbose_name = _("Edit Workload")
    url = "horizon:mydashboard:workloads_panel:update"
    classes = ("ajax-modal",)
    icon = "pencil"

    def get_link_url(self, datum):
        instance_id = self.table.get_object_id(datum)
        return urlresolvers.reverse(self.url, args=[instance_id])