Django/Python: Return JSON

Question

I can't seem to find the proper way to return a JSON list in Django. Every method I choose gives me an error.

Here is what I have

def filter(request):
    results = Profile.objects.all
    results_json = serializers.serialize('json', results )
    return HttpResponse( results_json, mimetype='application/json' )

I get this error 'instancemethod' object is not iterable

So I changed it to...

def filter(request):
    results = Profile.objects.all
    results_json = serializers.serialize('json', [results] )
    return HttpResponse( results_json, mimetype='application/json' )

Now I get this error: 'function' object has no attribute '_meta'

How can I properly return a JSON object?

Answer 1

results = Profile.objects.all

needs to be

results = Profile.objects.all()

so that you actually call the QuerySet 's all method, rather than just reference it. The serializer should be able to take it from there.

Answer 2

Both of your problems (the one before and the one after the change) are un-related to Django or JSON. The error is because of your choice of filter as the name of the function. filter is a name of Python's built-in function which causes the python interpreter to interpret your method differently when invoked in the context of the django view object.