<s>[INST] I have created a RESTful API using the Django Rest Framework (DRF) and Python. I'm trying to implement a defalut value for a field that does not exist in the request data.

Here's an example of how I'm doing it now:

```
class MyModel(models.Model):
    name = models.CharField(max_length=255)
    email = models.EmailField()

class MySerializer(serializers.ModelSerializer):
    class Meta:
        model = MyModel
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if not self.initial_data.get('email'):
            self.initial_data['email'] = 'default@example.com'

class MyViewSet(viewsets.ModelViewSet):
    queryset = MyModel.objects.all()
    serializer_class = MySerializer
```

However, I'm getting an error:

```
'DictView' object has no attribute 'initial_data'
```

It looks like it's due to the version of DRF I'm using. What is the best alternative for this problem?[/INST]