def get_relationship_value(self, related_obj, key):

        return text_type(getattr(related_obj, getattr(self, 'relationship_lookup_field')))
Test fetching contacts that don't have any identities.
dataset/ETHPy150Open ydaniv/django-rest-assured/rest_assured/testcases.py/UpdateAPITestCaseMixin.get_relationship_value--crossover with--dataset/ETHPy150Open viewfinderco/viewfinder/backend/www/test/fetch_contacts_test.py/FetchContactsTestCase.testContactsWithoutIdentities