code: def queryset_from_filter_dict(filter_dict=None, model=None, app=None):
      
      model = model or DEFAULT_MODEL
      app = app or DEFAULT_APP
      model = get_model(model, app)
      
      if filter_dict:
          return model.objects.filter(**filter_dict)
      return model.objects
docs: TODO: add fuzzy app, model and field (filter key) matching