How to get created object in CreateView

Question

Here I am using CreateView to create item and after that i am redirecting user to update other fields of currently created object.

Here my code:

Views.py

class DynamicCreate(CreateView):
    model = Dynamic
    form_class = DynamicForm
    template_name = 'book/dynamic_create.html'

    def form_valid(self, form):
        book = form.save(commit=False)
        book.user = User.objects.get(pk=(self.request.user.pk))
        book.save()
        return reverse('book:dynamicupdate', args=(self.object.id))


Urls.py

url(r'^book/create/$', views.DynamicCreate.as_view(), name='dynamiccreate'),
url(r'^book/delete/(?P<pk>[\w]+)/$', views.DynamicDelete.as_view(), name='dynamicdelete'),
url(r'^book/update/(?P<pk>[\w]+)/$', views.DynamicUpdate.as_view(), name='dynamicupdate'),

But Here I am getting error:

Exception Type:     AttributeError
Exception Value:    'NoneType' object has no attribute 'id'

I go through other previously asked question like This, But I don't know What I am missing here. My CreateView is able to create/save data in Table but it is not able to redirect me to update View Page.

Answer 1

The form_valid method inherited from ModelFormMixin includes logic to set self.object to the newly created object, but your overriding method uses the book variable instead. Changing the args to reference book as mentioned above works fine.

Another option would be to replace the book variable with self.object, if only to follow the example set by the default method.