<form method="POST">
    {% csrf_token %}
    <input type="text" name="param1">
    <input type="text" name="param2">
    <input type="submit" value="Submit">
</form>

class index(TemplateView):
    template_name = 'index.html'

    def post(self, request, *args, **kwargs):

        param1 = request.POST.get('param1', 'default_value1')
        param2 = request.POST.get('param2', 'default_value2')

        print(param1)
        print(param2)

        context = self.get_context_data(**kwargs)
        context['param1'] = param1
        context['param2'] = param2


        return self.render_to_response(context)