I’m using django for a web project

I wan’t to render a page for unauthenticate users and one for authenticated.

Is it better to define this directly in my view :

def get(self, request, *args, **kwargs):
    if not request.user.is_authenticated:
        return render (request, 'unauthenticated.html')
    else:
        return render (request, 'authenticated.html')

Or use only one view, but root them in my template :

def get(self, request, *args, **kwargs):
    return render (request, 'index.html')

<!-- index.html -->
{% if not user.is_authenticated %}
    {% include "unauthenticated.html" %}
{% else %}
    {% include "authenticated.html" %}
{% endif%}

(My question is about both security and implementation)