def published(self):
        return self.filter_published(self)
Putting flat=True should flatten the data to a single list of elements
dataset/ETHPy150Open batiste/django-page-cms/pages/managers.py/PageManager.published--crossover with--dataset/ETHPy150Open Axiologue/DjangoRestMultipleModels/drf_multiple_model/tests.py/TestMMViews.test_flat_custom_labels