Django: Object of type Profile is not JSON serializable

Question

I have a model called Order, Profile and Users. In my Order model, i want to access the Profile of the buyer and seller, so i wrote a function in the Order model to get the profile of the buyer and the seller.

class Orders(models.Model):
    service = models.ForeignKey(Service, on_delete=models.SET_NULL, null=True, related_name="service_orders")
    seller = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name="seller")
    buyer = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name="buyer")
    ...

    def seller_profile(self):
        seller_profile = Profile.objects.get(user=self.seller)
        return seller_profile

    def buyer_profile(self):
        buyer_profile = Profile.objects.get(user=self.buyer)
        return buyer_profile

Now when i add the seller_profile and buyer_profile in my OrderSerializer in serializer.py, and try accessing the api endpoint in the browser, it shows the error Object of type Profile is not JSON serializable, Do i need to serialize my Profile Model or something like that?

class OrderSerializer(serializers.ModelSerializer):

    class Meta:
        model = Orders
        fields = ['id','seller', 'buyer', 'buyer_profile', 'seller_profile', ...]
       
    
    def __init__(self, *args, **kwargs):
        super(OrderSerializer, self).__init__(*args, **kwargs)
        request = self.context.get('request')
        if request and request.method=='POST':
            self.Meta.depth = 0
        else:
            self.Meta.depth = 2

I dont have any ProfileSeriallizer, do i need it?

Niko · Accepted Answer · 2023-02-13 17:11:30Z

1

models.py

class Orders(models.Model):
    service = models.ForeignKey(Service, on_delete=models.SET_NULL, null=True, related_name="service_orders")
    seller = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name="seller")
    buyer = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name="buyer")

serializers.py

class ProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = Profile
        fields = '__all__'
        depth = 1

    # Flatten
    def to_representation(self, instance):
        representation = super().to_representation(instance)
        user= representation.pop('user')
        
        for key, value in user.items():
            representation[key] = value

        return representation

class OrderSerializer(serializers.ModelSerializer):
    seller = serializers.SerializerMethodField()
    buyer = serializers.SerializerMethodField()

    class Meta:
        model = Orders
        fields = ['id','seller', 'buyer']

    def get_seller(self, obj):
        return ProfileSerializer(obj.seller.profile).data

    def get_buyer(self, obj):
       return ProfileSerializer(obj.buyer.profile).data

    
    def __init__(self, *args, **kwargs):
        super(OrderSerializer, self).__init__(*args, **kwargs)
        request = self.context.get('request')
        if request and request.method=='POST':
            self.Meta.depth = 0
        else:
            self.Meta.depth = 2

edited Feb 13, 2023 at 17:11

answered Feb 12, 2023 at 15:19

Niko

3,8052 gold badges12 silver badges17 bronze badges

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

2 Comments

Destiny Franks Over a year ago

this is not fixing the error, i have added the property method on my method

Niko Over a year ago

My mistake, I did not create the profile. So, yes you are going to need a serializer. Also, you do not need the model methods, instead you can access profile via relationship. I will update the answer. (I must say that, it would be probably better to use Profile directly in the model relation).

Collectives™ on Stack Overflow

Django: Object of type Profile is not JSON serializable

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related