title: django createview how to get the object that is created
body: <p>i've two concatenated form. Basically user fills in the first form and then is redirected to the second one which adds value to the data of the first form.
  E.G. I've a form Movie (first form) and then i'm redirected to the form (actor) which add the actor to the movie.</p>
  
  <p>in my case the Movie = Chiamata and Actor = Offerta (i keep the italians name for what i need :D)</p>
  
  <p>fine.</p>
  
  <p>those are my urls in the urls.py </p>
  
  <pre><code>url(r'^chiamata/$', ChiamataCreate.as_view(),name='chiamata_create'),
  url(r'^chimamata/(?P&lt;pk&gt;\d+)/offerta$', OffertaCreate.as_view(), name='offerta_create'),
  </code></pre>
  
  <p>i've this create view</p>
  
  <pre><code>class ChiamataCreate(CreateView):
      template_name = 'chiamata_form.html'
      form_class = ChiamataForm
      success_url=reverse_lazy('offerta_create',args=(??,))
  </code></pre>
  
  <p>now the problem is how i can get the PK of the object created by the chiamataForm. I need that to add it to the the url of offerta_create.</p>