如何使用django-rest-framework序列化ValuesQuerySet？

Question

I'd like to build an API for a complex query.

Having read the documentation, I prefer using django-rest-framework, which will provide serialization and pagination automatically for a ValuesQuerySet, rather than doing my own serialization.

However, I only found docs for default model QuerySet and did not find any documentation for serializing ValuesQuerySet (when the model is not known). How can I do that?

I've seen this answer but the solution was not applicable in my case.

Here is the code, NOT using django-rest-framework:

@login_required
def category_tallies(request):
    my_friends = FacebookUser.objects.filter(user_id=request.user.id)
    cat_tallies = FacebookLike.objects.filter(id__in=my_friends).values('category').annotate(Count('category')).order_by('-category__count')
    return HttpResponse(
        json.dumps(cat_tallies),
        mimetype='application/json')

Answer 1

Try this:

from django.core import serializers

cat_tallies = FacebookLike.objects.filter(id__in=my_friends).annotate(count=Count('category')).order_by('-count')
json_dump = serializers.serialize('json', cat_tallies, fields=('category','count'))