Django Rest Framework How to update SerializerMethodField

Question

I have a serializer like this:

class PersonSerializer(serializers.ModelSerializer):
    gender = serializers.SerializerMethodField()
    bio = BioSerializer(         


        

Answer 1

Aside from accepted answer, there can be other simpler hooks. If 'create' and 'update' worked as you wanted before modifiying gender field, then you can do as follow to get everything to default for create and update requests.

• Override the __init__ method . .

class PersonSerializer(serializers.ModelSerializer):
    bio = BioSerializer()
    
     def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        try:
            if self.context['request'].method in ['GET']:
                self.fields['gender'] = serializers.SerializerMethodField()
        except KeyError:
            pass

    class Meta:
        model = Person
        fields = UserSerializer.Meta.fields + ('bio',)

    def get_gender(self, obj):
        return obj.get_gender_display()   
       
...