def sorted_xforms(self):
# TODO: cache. efficiency.
forms = []
for form_id in self.form_ids:
forms.append(CXFormInstance.get(form_id))
return sorted(forms, key=lambda form: Encounter.get_visit_date(form))
def get_last_visit_date(self):
if self.sorted_encounters():
return self.sorted_encounters()[-1].visit_date
return Encounter.get_visit_date(self.sorted_xforms()[-1])
