How to execute a method from Class Based Views on opening a Django page?

Question

Django

Good afternoon, I'm trying to deal with CBV.
I want the test_http_response function to be processed as soon as a request for the URL is made, but it doesn’t work for some reason. Tell me the right way, please.

class PostDetailView(DetailView):
    model = Post
    def test_http_response(self, request, pk):
        HttpResponse("test response")
        print("test")

Answer 1

class PostDetailView(DetailView):
    model = Post
    def dispatch(self, request, *args, **kwargs):
        resp = HttpResponse("test response")
        print("test")
        return resp