This method gets called by the routing engine. The first argument is
        `request` which contains a `HttpRequest` instance.
        The request is stored in `self.request` for later use. The storage
        instance is stored in `self.storage`.

        After processing the request using the `dispatch` method, the
        response gets updated by the storage engine (for example add cookies).

def dispatch(self, request, *args, **kwargs):
        """
        This method gets called by the routing engine. The first argument is
        `request` which contains a `HttpRequest` instance.
        The request is stored in `self.request` for later use. The storage
        instance is stored in `self.storage`.

        After processing the request using the `dispatch` method, the
        response gets updated by the storage engine (for example add cookies).
        """
        # add the storage engine to the current formwizard instance
        self.wizard_name = self.get_wizard_name()
        self.prefix = self.get_prefix()
        self.storage = get_storage(self.storage_name, self.prefix, request,
            getattr(self, 'file_storage', None))
        self.steps = StepsHelper(self)
        response = super(WizardView, self).dispatch(request, *args, **kwargs)

        # update the response (e.g. adding cookies)
        self.storage.update_response(response)
        return response