Lists are not currently supported in HTML input

Question

I am using Django REST generic views for my API endpoint. One of the field in my serializer has ManyToMany relationship. I want to show that field into my API endpoint, But getting this error

Lists are not currently supported in HTML input.

My view is this:

class AlertCreateView(ListCreateAPIView):
    permission_classes = (IsAuthenticated,)
    pagination_class = None
    serializer_class = AlertSerializer

    def get_queryset(self):
        queues = Queue.objects.all()
        for queue in queues:
           queryset = Alert.objects.filter(
               queue=queue
           )

        return queryset

My Serializer is this:

class AlertSerializer(serializers.ModelSerializer):
     queue = QueueSerializer(many=True)

     class Meta:
         model = Alert
         fields = (
             'id', 'name', 'queue','email', 'expected_qos'
         )

Answer 1

You do not need the get_queryset method you could do something like this:

#views.py
class AlertCreateView(ListCreateAPIView):
     queryset = Alert.objects.all()
     serializer_class = AlertSerializer
     permission_classes = (IsAuthenticated,)

Name the queues field in the serializer in the same way as it is written in therelated_name of the model. And your QueueSerializer can inherit fromPrimaryKeyRelatedField to be rendered.

#models.py
class AlertModel(models.Model):
    ...
    queues = models.ManyToManyField(Queue, ... related_name='queues')     
    ...

#serializer.py
class QueueSerializer(PrimaryKeyRelatedField, serializers.ModelSerializer):
    class Meta:
       model: Queue

class AlertSerializer(serializers.ModelSerializer):
    queues = QueueSerializer(many=True, queryset=Queue.objects.all())

    class Meta:
        model = Alert
        fields = (
         'id', 'name', 'queues','email', 'expected_qos'
        )