In ModelSerializer self.context doesn't have request , how to get this - django

Question

my serialiser class is:
class NakshatraDateSerializer(serializers.ModelSerializer):
id = serializers.IntegerField(read_only=True)
is_note_present = serializers.SerializerMethodField(read_only=True)
def get_is_note_present(self, nakshatra_date ):
user = None
request = self.context.get("request")
print (str(request))
if request and hasattr(request, "user"):
user = request.user
# user = serializers.SerializerMethodField('_user')
if user is None:
logging.error("user is none")
return False
try:
nakshatra_date_note = Notes.objects.all().get(nakshatra_date=nakshatra_date, created_by=user)
except ObjectDoesNotExist:
nakshatra_date_note = None
if nakshatra_date_note is None:
logging.error("no note present for this nakshatra date")
return False
logging.error(str(nakshatra_date_note))
return True
date = serializers.DateField(
required=True,
error_messages={
"date": "Nakshatra for date already present",
},
validators=[UniqueValidator(queryset=NakshatraDate.objects.all(), message="Nakshatra for date already present
")]
)
class Meta:
model = NakshatraDate
fields = (
'id', 'is_note_present', 'date', 'updated', 'created')
vewclass is :
class NakshatraDateViewSet(viewsets.ModelViewSet):
"""
Nakshatra dates
"""
permission_classes = (AllowAny,)
queryset = NakshatraDate.objects.all()
serializer_class = NakshatraDateSerializer
pagination_class = LargeResultsSetPagination
filter_backends = (django_filters.rest_framework.DjangoFilterBackend,)
filter_class = NakshatraDateFilter
def filter_queryset(self, queryset):
queryset = super(NakshatraDateViewSet, self).filter_queryset(queryset)
return queryset.order_by('-id')
def perform_create(self, serializer):
serializer.save()
i am trying to set value 'True' in variable is_note_present if a Note is present on a particular date. or else 'False'. But i am not able to get request object in self.context.
class Notes(models.Model):
date = models.DateField(null=False)
updated = models.DateTimeField(auto_now=True)
created = models.DateTimeField(auto_now_add=True, editable=False)
created_by = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='notes', on_delete=models.CASCADE)
i tried various way to get request . some of them aredef get_serializer_context(self):
return {'request': self.request}
and trien to context (context={'request':request}) with serialize_class variable in modelviewset
still i am not able to get the request in self.context

Answer 1

Your view should be like this.
class NakshatraDateViewSet(viewsets.ModelViewSet):
"""
Nakshatra dates
"""
permission_classes = (AllowAny,)
serializer_class = NakshatraDateSerializer
pagination_class = LargeResultsSetPagination
filter_backends = (django_filters.rest_framework.DjangoFilterBackend,)
filter_class = NakshatraDateFilter
def get_queryset(self, queryset):
queryset = NakshatraDate.objects.all()
return queryset.order_by('-id')
def get_serializer_context(self):
return {'request': self.request}
def create(self, request, *args, **kwargs):
serializer = self.get_serializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(data=serializer.data)
return Response(status=status.HTTP_400_BAD_REQUEST)
You can see further about viewsets here.