Django - AttributeError: 'Fichas' object has no attribute 'update' - django

Question

I have a serializer that verify if some fields are empty or not. If a field is empty all works perfectly, but if all the fields are correct I obtain and AttributeError: 'Fichas' object has no attribute 'update'.
This is the view and the serializer:
views.py
class PublicarFichaViewSet(APIView):
permission_classes = (IsAuthenticated, GroupPermission)
def get_object(self, pk):
try:
return Fichas.objects.get(pk=pk)
except:
raise Http404
def get(self, request, pk, format=None):
ficha = self.get_object(pk)
serializer = PublicarFichaSerializer(ficha)
return Response(serializer.data)
def put(self, request, pk, format=None):
ficha = self.get_object(pk)
serializer = PublicarFichaSerializer(ficha, data=request.DATA)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
serializer.py
class PublicarFichaSerializer(serializers.Serializer):
Centro_responsable = serializers.CharField(required=True, max_length=64)
Autor_de_la_ficha = serializers.CharField(required=True, max_length=64)
Correo_electronico_del_autor_de_la_ficha = serializers.EmailField(required=True)
Autor_del_caso_de_estudio = serializers.CharField(required=True, max_length=64)
Correo_electronico_del_autor_del_caso_de_estudio = serializers.EmailField(required=True)
Tutor = serializers.CharField(required=True, max_length=64)
Correo_electronico_del_tutor = serializers.EmailField(required=True)
Fecha_de_tutela = serializers.DateField(required=True)
Titulo = serializers.CharField(required=True, max_length=64)
Tipo_de_objeto_u_obra_por_su_funcion = serializers.CharField(required=True, max_length=64)
Plano_de_situacion = serializers.CharField(required=True, max_length=64)
Fecha_de_validez_legal = serializers.DateField(required=True)
Ficha_publicada = serializers.BooleanField()
def validate_Ficha_publicada(self, attrs, source):
if not attrs['Ficha_publicada']:
raise serializers.ValidationError("Ficha no publicada")
return attrs
EDIT: The traceback
Environment:
Request Method: POST
Request URL: http://localhost:8000/publicarficha/1/
Django Version: 1.6.5
Python Version: 2.7.6
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'corsheaders',
'rest_framework',
'phi_catalogo',
'rest_framework.authtoken',
'django_evolution',
'django.contrib.admin',
'multiselectfield',
'django_extensions',
'pytz')
Installed Middleware:
('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',
'corsheaders.middleware.CorsMiddleware')
Traceback:
File "/Users/jian/phi/env/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
112. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/jian/phi/env/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
57. return view_func(*args, **kwargs)
File "/Users/jian/phi/env/lib/python2.7/site-packages/django/views/generic/base.py" in view
69. return self.dispatch(request, *args, **kwargs)
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
403. response = self.handle_exception(exc)
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
400. response = handler(request, *args, **kwargs)
File "/Users/jian/phi/backend/phi_catalogo/views.py" in put
148. if serializer.is_valid():
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/serializers.py" in is_valid
550. return not self.errors
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/serializers.py" in errors
542. ret = self.from_native(data, files)
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/serializers.py" in from_native
375. return self.restore_object(attrs, instance=getattr(self, 'object', None))
File "/Users/jian/phi/env/lib/python2.7/site-packages/rest_framework/serializers.py" in restore_object
335. instance.update(attrs)
Exception Type: AttributeError at /publicarficha/1/
Exception Value: 'Fichas' object has no attribute 'update'

Answer 1

Try using a ModelSerializer instead of the Serializer as a super class.