How to process a form (via get or post) using class-based views?

Question

Im trying to learn class-based views, for a detail or list view is not that complicated.

I have a search form and I just want to see if I send a query to show up the results.

Here is the function code (is not mine, is from a django book):

def search_page(request):
    form = SearchForm()
    bookmarks = []
    show_results = False
    if 'query' in request.GET:
        show_results = True
        query = request.GET['query'].strip()
        if query:
            form = SearchForm({'query': query})
            bookmarks = Bookmark.objects.filter(title__icontains=query)[:10]


    show_tags = True
    show_user = True

    if request.is_ajax():
        return render_to_response("bookmarks/bookmark_list.html", locals(), context_instance=RequestContext(request))
    else:
        return render_to_response("search/search.html", locals(), context_instance=RequestContext(request))

Ignoring the ajax fact (just to make the problem easier for now), how can I translate this to class-based views?

I quick tried something like this:

class SearchPageView(FormView):
    template_name = 'search/search.html'

    def get(self, request, *args, **kwargs):
        form = SearchForm()
        self.bookmarks = []
        self.show_results = False
        if 'query' in self.request.GET:
            self.show_results = True
            query = self.request.GET['query'].strip()
            if query:
                form = SearchForm({'query': query})
                self.bookmarks = Bookmark.objects.filter(title__icontains=query)[:10]
        return super(SearchPageView, self).get(request, *args, **kwargs)

    def get_context_data(self, **kwargs):
        context = super(SearchPageView, self).get_context_data(**kwargs)
        context.update({
            'show_tags': True,
            'show_user': True,
            'show_results': self.show_results,
            'bookmarks': self.bookmarks
        })
        return context

Doesn't work, I get a: "'NoneType' object is not callable"

Fair enough, I started today with this stuff.

So, what's the way to make a Class-based views that can manage a get (and a post too if needed) request?

I have another example:

@render_to('registration/register.html')
def register_page(request):
    if request.method == 'POST':
        form = RegistrationForm(request.POST)
        if form.is_valid():
            user = User.objects.create_user(
                username=form.cleaned_data['username'],
                password=form.cleaned_data['password1'],
                email=form.cleaned_data['email']
            )
            return HttpResponseRedirect('/accounts/register/success/')
    else:
        form = RegistrationForm()
    return locals()

Would this be "transformed" the same way that the first one? Or they extend differents Views?

Im confused a lot. I don't know if the first is ProcessFormView and the second FormView or what.

Thanks.

EDIT: Solution I ended with:

class SearchPageView(FormView):
    template_name = 'search/search.html'

    def get(self, request, *args, **kwargs):
        self.bookmarks = []
        self.show_results = False
        form = SearchForm(self.request.GET or None)
        if form.is_valid():
            self.show_results = True
            self.bookmarks = Bookmark.objects.filter(title__icontains=form.cleaned_data['query'])[:10]

        return self.render_to_response(self.get_context_data(form=form))


    def get_context_data(self, **kwargs):
        context = super(SearchPageView, self).get_context_data(**kwargs)
        context.update({
            'show_tags': True,
            'show_user': True,
            'show_results': self.show_results,
            'bookmarks': self.bookmarks
        })
        return context

I leave this here to someone with same question :)