This renders the form or, if needed, does the http redirects.

def get(self, *args, **kwargs):
        """
        This renders the form or, if needed, does the http redirects.
        """
        step_url = kwargs.get('step', None)
        if step_url is None:
            if 'reset' in self.request.GET:
                self.storage.reset()
                self.storage.current_step = self.steps.first
            if self.request.GET:
                query_string = "?%s" % self.request.GET.urlencode()
            else:
                query_string = ""
            next_step_url = reverse(self.url_name, kwargs={
                'step': self.steps.current,
            }) + query_string
            return redirect(next_step_url)

        # is the current step the "done" name/view?
        elif step_url == self.done_step_name:
            last_step = self.steps.last
            return self.render_done(self.get_form(step=last_step,
                data=self.storage.get_step_data(last_step),
                files=self.storage.get_step_files(last_step)
            ), **kwargs)

        # is the url step name not equal to the step in the storage?
        # if yes, change the step in the storage (if name exists)
        elif step_url == self.steps.current:
            # URL step name and storage step name are equal, render!
            return self.render(self.get_form(
                data=self.storage.current_step_data,
                files=self.storage.current_step_data,
            ), **kwargs)

        elif step_url in self.get_form_list():
            self.storage.current_step = step_url
            return self.render(self.get_form(
                data=self.storage.current_step_data,
                files=self.storage.current_step_data,
            ), **kwargs)

        # invalid step name, reset to first and redirect.
        else:
            self.storage.current_step = self.steps.first
            return redirect(self.url_name, step=self.steps.first)