Model turns into tuple in django's view. Whata hell? - django

Question

I am trying to save a string (session hash) into django's model, but something is going wrong..
When I try to update the string, the model turns into a tuple causing AttributeError.
At the beginning everything was in a one 'post' function in view and yet not working. I tried to devide that stuff into functions, but it still does not help. Before the assignment type(session) says that 'session' is a model, not tuple.
View function code:
def post(self, request, *args, **kwargs):
data = json.loads(request.body.decode('utf-8'))
form = self.form_class(data)
if form.is_valid():
phone = form.cleaned_data.get('phone')
code = form.cleaned_data.get('code')
password = form.cleaned_data.get('password')
session = Session.objects.get_or_create(phone=phone, user=request.user.telegramuser)
if code and password:
return utils.sign_in(session, phone, code, password)
elif code:
return utils.sign_in(session, phone, code)
elif phone:
return utils.send_code_request(session, phone)
return JsonResponse({'state': 'none'})
utils.send_code_request and sign_in have the same structure
def send_code_request(session, phone):
result = asyncio.run(_send_code_request(phone))
# result - {
# 'state': 'ok',
# 'session': 'Hfkdi...AaF24s'
# }
if result['state'] == 'ok':
session.update_session(result.pop('session'))
return JsonResponse(result)
Manager
class DefaultManager(models.Manager):
def get_or_create(self, *args, **kwargs):
try:
return self.get(*args, **kwargs)
except ObjectDoesNotExist:
return self.create(*args, **kwargs)
Error:
Internal Server Error: /sessions/add/
Traceback (most recent call last):
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\views\generic\base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\contrib\auth\mixins.py", line 52, in dispatch
return super().dispatch(request, *args, **kwargs)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\.env\lib\site-packages\django\views\generic\base.py", line 97, in dispatch
return handler(request, *args, **kwargs)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\sendall\views.py", line 78, in post
return utils.send_code_request(session, phone)
File "C:\Users\ipyth\Documents\projects\telegram-sendall\sendall\utils.py", line 46, in send_code_request
session.update_session(result.pop('session'))
AttributeError: 'tuple' object has no attribute 'update_session'
[23/Jul/2019 23:51:35] "POST /sessions/add/ HTTP/1.1" 500 86600

Answer 1

get_or_create does indeed return a tuple, of the object and a created flag. Either capture both:
session, created = Session.objects.get_or_create(phone=phone...)
Or, use create instead.
Or even better, use the form save method:
session = form.save()