Django Rest Framework object is not iterable?

Question

I have serialised one of my models that has a foreign key in. I get 'Parent' object is not iterable

models.py

class Parent(models.Model):
    # Parent data

class Child(models.Model):
    parent = ForeignKey(Parent)

serializer.py

class ChildSerializers(serializers.ModelSerializer):
    parent = serializers.RelatedField(many=True)
    class Meta:
        model = ReportField
        fields = (
            'id',
            'parent'
        )

api.py

class ChildList(APIView):
    def get(self, request, format=None):
        child = Child.objects.all()
        serialized_child = ChildSerializers(child, many=True)
        return Response(serialized_child.data)

Im guessing i have to pass the parent list to the child list but not sure of the best way to do it

attempt api.py

class ChildList(APIView):
    def get(self, request, format=None):
        child = Child.objects.all()
        parent = Parent.objects.all()
        serialized_child = ChildSerializers(child, many=True)
        serialized_parent = ChildSerializers(parent, many=True)
        return Response(serialized_child.data, serialized_parent.data)

Why using many=True. Parent is just a single field, no need to use explicit serializer field. Just get rid of these many=True.. — mariodev
– mariodev, Commented Nov 2, 2014 at 19:59
@mariodev could you please make your comment as the answer. I feel like I am taking credits of your answer. — Praveen Singh Yadav
– Praveen Singh Yadav, Commented Aug 9, 2017 at 17:31

Community · Accepted Answer · 2017-05-23 12:18:00Z

50

Why using many=True. Parent is just a single field, no need to use explicit serializer field. Just get rid of these many=True

-answered by mariodev in comment.

edited May 23, 2017 at 12:18

CommunityBot

11 silver badge

answered Nov 17, 2015 at 13:09

Praveen Singh Yadav

1,8614 gold badges20 silver badges32 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

devashish rane · Accepted Answer · 2019-05-26 15:44:34Z

0

You can do something like this using python collections as an intermediate

#serializers.py
class TimelineSerializer(serializers.Serializer):
    childs= childSerializer(many=True)
    parents = parentSerializer(many=True)

#apiviews.py
from collections import namedtuple
Timeline = namedtuple('Timeline', ('childs', 'parents'))

def list(self, request):
        timeline = Timeline(
            childs=Child.objects.all(),
            parents=Parent.objects.all(),
        )
        serializer = TimelineSerializer(timeline)
        return Response(serializer.data)

answered May 26, 2019 at 15:44

devashish rane

131 silver badge2 bronze badges

Comments

Mustaq Mohammad · Accepted Answer · 2021-03-05 08:52:10Z

0

If your using a ModalSerializer then you have two foreign keys in a modal, then use "to_representation" function like this

def to_representation(self, instance):
        rep = super().to_representation(instance)
        rep['pcatalog_name'] = CatalogSerializer(instance.pcatalog_name).data
        rep['pcategory_name'] = CategorySerializer(instance.pcategory_name).data
        return rep

answered Mar 5, 2021 at 8:52

Mustaq Mohammad

11 bronze badge

Comments

Babacar Ly · Accepted Answer · 2021-03-19 09:19:05Z

0

Replace ForeignKey by ManyToManyField to clarify the serializer field with many = True

edited Mar 19, 2021 at 9:19

answered Mar 19, 2021 at 9:13

Babacar Ly

315 bronze badges

Collectives™ on Stack Overflow

Django Rest Framework object is not iterable?

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related