错误int() argument must be a string or a number,not 'Choice'
我是django休息框架的新手
请帮助
这是我的serializers.py
class VoteSerializer(ModelSerializer):
class Meta:
model=Vote
fields='__all__'
def from_native(self, data, files):
data['poll_id'] = self.context['pollid']
return super(VoteSerializer, self).from_native(data, files)
def validate(self, data):
choice=data.get("choice",None)
user=data.get("id",None)
polid=data.get("poll_id")
if not user and not choice:
raise ValidationError("A user and choice has to be present")
choice_poll_obj=Choice.objects.filter(
Q(id=choice) |
Q(poll=polid)
).distinct()
user_obj=User.objects.get(id=user)
if user_obj.exists() and choice_poll_obj.exists():
pass
else:
raise ValidationError("This choice/user is not valid for this question")
return data
这是我的views.py
class VotesAPIView (CreateAPIView) :
serializer_class = VoteSerializer
def post(self, request, *args, **kwargs):
data = request.data # like request.post
poll = Poll.objects.get(id=kwargs['pk'])
poll_id=poll.id
serializer = VoteSerializer(data=request.data,context={'pollid': poll_id})
if serializer.is_valid(raise_exception=True):
new_data = serializer.data
return Response(new_data, status=HTTP_200_OK)
return Response(serializer.errors, status=HTTP_400_BAD_REQUEST)
这是我的代码的追溯。请仔细研究：
Environment:
Request Method: POST
Request URL: http://localhost/pollsAPI/1/vote
Django Version: 1.10.5
Python Version: 2.7.6
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'rest_framework',
'polls.apps.PollsConfig']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
58. return view_func(*args, **kwargs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/views/generic/base.py" in view
68. return self.dispatch(request, *args, **kwargs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
483. response = self.handle_exception(exc)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/rest_framework/views.py" in handle_exception
443. self.raise_uncaught_exception(exc)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
480. response = handler(request, *args, **kwargs)
File "/home/yodaplus/Documents/RESTAPIs/polls/views.py" in post
94. if serializer.is_valid(raise_exception=True):
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/rest_framework/serializers.py" in is_valid
236. self._validated_data = self.run_validation(self.initial_data)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/rest_framework/serializers.py" in run_validation
434. value = self.validate(value)
File "/home/yodaplus/Documents/RESTAPIs/polls/serializers.py" in validate
123. Q(poll=polid)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method
85. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/query.py" in filter
796. return self._filter_or_exclude(False, *args, **kwargs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/query.py" in _filter_or_exclude
814. clone.query.add_q(Q(*args, **kwargs))
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/sql/query.py" in add_q
1227. clause, _ = self._add_q(q_object, self.used_aliases)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/sql/query.py" in _add_q
1247. current_negated, allow_joins, split_subq)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/sql/query.py" in _add_q
1253. allow_joins=allow_joins, split_subq=split_subq,
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/sql/query.py" in build_filter
1187. condition = self.build_lookup(lookups, col, value)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/sql/query.py" in build_lookup
1083. return final_lookup(lhs, rhs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/lookups.py" in __init__
19. self.rhs = self.get_prep_lookup()
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/lookups.py" in get_prep_lookup
59. return self.lhs.output_field.get_prep_value(self.rhs)
File "/home/yodaplus/Documents/env_rest/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py" in get_prep_value
946. return int(value)
Exception Type: TypeError at /pollsAPI/1/vote
Exception Value: int() argument must be a string or a number, not 'Choice'
答案 0 :(得分：0)
可能应该是
choice_poll_obj=Choice.objects.filter(
Q(id=choice) |
Q(poll_id=polid) # <- use poll_id instead of poll
).distinct()
答案 1 :(得分：0)
它应该是poll double undercore id。
choice_poll_obj=Choice.objects.filter(
Q(id=choice) |
Q(poll__id=polid)
).distinct()