class based view Type error

[Trippy Samurai]

Hello,

I have my function based writted like this 

@login_required

def accept_tickets_view(request,pk):

ticket = get_object_or_404(Ticket,id=pk)

if ticket.status == 'Opened':

ticket.status = 'Accepted'

ticket.accepted_date = datetime.datetime.now()

ticket.accepted_by = request.user

ticket.save()

return redirect(reverse('open_tickets'))

And i changed the above to cbv but getting the following error how do i solve this

class DeveloperAcceptTicketView(LoginRequiredMixin,TemplateView):

template_name = 'app/open_tickets.html'

def get(self,request,pk):

ticket = Ticket.objects.get(id=self.pk)

if ticket.status == 'Opened':

ticket.status = 'Accepted'

ticket.accepted_by = self.request.user

ticket.save()

return render(request,self.template_name)

[Bazil M H]

Have you changed the urls.py file accordingly?