So I have a fairly large Django site and I'm using DRF mostly because it 
provides a convenient way for me to allow multiple authentication methods. 
I don't have all of rest framework installed in my installed apps, only 
rest_framework.authtoken. My views look like this:

@api_view(['POST'])
@authentication_classes((SessionAuthentication, BasicAuthentication, 
TokenAuthentication))
@permission_classes((IsAuthenticated,))
def notifications(request):

    ret = {
        'action': 'Message Sent',
        'users': [],
        'stack': []
    }
    try:
        data = request.data
    except:
        return HttpResponse(JsonResponse({"error": "Invalid request", "data"
: request}))

    ...


    return HttpResponse(JsonResponse(ret))

@api_view(['POST'])
@authentication_classes((SessionAuthentication, BasicAuthentication, 
TokenAuthentication))
@permission_classes((IsAuthenticated,))
@login_required
def addtogroup(request):
    ret = {
        "action": "Add to group",
        "group": None,
        "users": []
    }
    data = {}
    try:
        data = request.data
    except:
        return HttpResponse(JsonResponse({"error": "Invalid request", "data"
: request}))


    ...


    return HttpResponse(JsonResponse(ret))



For most of the views I treated like this it work just fine, but for some 
reason, some of the time, I get:

Exception Type: TemplateDoesNotExist
Exception Value: rest_framework/api.html

Why does this work sometimes but not others?

I realize that this is probably not how DRF was intended to be used, but it 
seems like it should either work or not, and not break only on certain 
urls/views.

Anyone have any idea why this is happening?


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