[Django]-How to require authentication on Django Rest Framework views?

I think you are searching for Django Rest Framework APIView.

Here you can use permission classes: http://www.django-rest-framework.org/api-guide/permissions/

On your project’s seetings.py:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    )
}

And on your code:

from rest_framework.permissions import IsAuthenticated

class home(APIView):
    renderer_classes = (TemplateHTMLRenderer,)
    permission_classes = (IsAuthenticated,)

    def get(self, request, format=None):
        template = get_template(template_name='myapp/template.html')
        return Response({}, template_name=template.template.name)

Decorators can only be used on functions, not classes.

However, for decorating class-based views the django docs suggest this:

Decorating the class

To decorate every instance of a class-based view, you need to decorate
the class definition itself. To do this you apply the decorator to the
dispatch() method of the class.

A method on a class isn’t quite the same as a standalone function, so
you can’t just apply a function decorator to the method – you need to
transform it into a method decorator first. The method_decorator
decorator transforms a function decorator into a method decorator so
that it can be used on an instance method. For example:

from django.contrib.auth.decorators import login_required 
from django.utils.decorators import method_decorator 
from django.views.generic import TemplateView

class ProtectedView(TemplateView):
    template_name = 'secret.html'

    @method_decorator(login_required)
    def dispatch(self, *args, **kwargs):
        return super(ProtectedView, self).dispatch(*args, **kwargs)

Since Django 1.9 you can alternatively use a Mixin for controlling permissions in class based views:

https://docs.djangoproject.com/en/1.9/releases/1.9/#permission-mixins-for-class-based-views
https://docs.djangoproject.com/en/1.9/topics/auth/default/#django.contrib.auth.mixins.LoginRequiredMixin