Django: CBV method form_valid() not called

Question

In my CreateView class I am overriding the form_valid() function as follows:

class ActionCreateView(CreateView):
    model = Action
    form_class = ActionCreateForm
    success_url = reverse_lazy('profile')

    def get_initial(self):
        initial = super(ActionCreateView, self).get_initial()
        initial['request'] = self.request
        return initial

    def form_valid(self, form):
        form.instance.user = self.request.user
        print 'user: %s'%form.instance.user
        try:
            da = form.cleaned_data['deadline_date']
            ti = datetime.now()
            form.instance.deadline = datetime(da.year, da.month, da.day, ti.hour, ti.minute, ti.second )
        except Exception:
            raise Http404
        return super(ActionCreateView, self).form_valid(form)

But as it turns out, the form_valid method is never called because the user is never printed. Interestingly, the clean method in the forms.py is called.

No error is displayed (therefore I do not have a traceback to display). The user is just redirected to the form again. What could be the reason for this behaviour? I'm running on Django 1.5 and Python 2.7.

Answer 1

It is likely that the form is not valid. You could override form_invalid() and see if that is called, or override post() and see what data is being POSTed.

Answer 2

form.instance.user = self.request.user is wrong

Please try this variant:

def form_valid(self, form):
    self.object = form.save(commit=False)  
    if self.request.user.is_authenticated():
        self.object.user = self.request.user
    # Another computing etc
    self.object.save()
    return super(ActionCreateView, self).form_valid(form)

P.S. You really need change get_initial? On you code i don't see that this need.