django-rest-framework serializer different fields in multiple views

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I am new at Django and couldn't find solution for my problem.

The problem is to force specific serializer for include different amount of fields in case of utilizing different views. I would like to use 'id' field in my 1st view, and in 2nd view - 'id' and 'name' fields.

Here is my model.py

class Processing(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField()
    description = models.CharField()

And here is my serializer.py

class ProcessingSerializer(serializers.ModelSerializer):
    id = serializers.ModelField(model_field=Processing()._meta.get_field('id'))
    class Meta:
        model = Processing
        fields = ('id', 'name')

Any help will be welcome.

django-serializer django-rest-framework django
3 Answers

You can also use the next approach:

class SelectSerializerMixin(object):
    serializer_class = None
    list_serializer_class = None
    retrieve_serializer_class = None
    update_serializer_class = None
    partial_update_serializer_class = None
    create_serializer_class = None

    def get_serializer_class(self):
        """
        Return the class to use for the serializer.
        Defaults to using `self.serializer_class`.
        """
        assert self.serializer_class is not None, (
            "'%s' should either include a `serializer_class` attribute, "
            "or override the `get_serializer_class()` method."
            % self.__class__.__name__
        )
        return getattr(self, f"{self.action}_serializer_class") or self.serializer_class

Then add this mixin to your ViewSet:

class MyModelViewSet(SelectSerializerMixin, ModelViewSet):
    queryset = models.MyModel.objects.all()
    serializer_class = serializers.SomeSerializer
    retrieve_serializer_class = serializers.AnotherSerializer
    list_serializer_class = serializers.OneMoreSerializer

But if you need a Serializer with a dynamic set of fields (ex. you have a handler but you need to return only specific fields in the response), you can use the approach from Ykh's answer.

https://stackoverflow.com/a/44064046/2818865

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