class SetLink(FormView):
    template_name = 'maps/form.html'
    form_class = LinkMatch
    success_url = reverse_lazy('view_maps')

    def form_valid(self, form):
        link = form.cleaned_data['link']
        return super().form_valid(form)


class ViewMaps(TemplateView):
    template_name = 'maps/maps.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['link'] = 'Как получить это значение с класса SetLink?'
        return context