[Fixed]-I need different data on different http action in django rest.Can i do it without making too many serializers?

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1👍

You could use an example class from DRF docs, which allows you change fields set when serializer initialized: 

class DynamicFieldsModelSerializer(serializers.ModelSerializer):
    """
    A ModelSerializer that takes an additional `fields` argument that
    controls which fields should be displayed.
    """

    def __init__(self, *args, **kwargs):
        # Don't pass the 'fields' arg up to the superclass
        fields = kwargs.pop('fields', None)

        # Instantiate the superclass normally
        super(DynamicFieldsModelSerializer, self).__init__(*args, **kwargs)

        if fields is not None:
        # Drop any fields that are not specified in the `fields` argument.
            allowed = set(fields)
            existing = set(self.fields.keys())
            for field_name in existing - allowed:
                self.fields.pop(field_name)

Usage example: 

class DataViewSet(viewsets.ModelViewSet):

    def list(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = self.get_serializer(queryset, many=True, fields=('fields_to_exclude',)
        return Response(serializer.data)

docs reference

👤Ivan Semochkin

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