Adding field that isn't in model to serializer in Django REST framework

Question

I have a model Comment that when created may or may not create a new user. For this reason, my API requires a password field when creating a new comment. Here is my Comment

Answer 1

Previous answers didn't work on DRF3.0, the restore_object() method is now deprecated.

The solution I have used is awful but I have not found a better one. I have put a dummy getter/setter for this field on the model, this allows to use this field as any other on the model.

Remember to set the field as write_only on serializer definition.

class Comment(models.Model):
    @property
    def commenter_pw():
        return None

    @commenter_pw.setter
    def commenter_pw(self, value):
        pass

class CommentCreateSerializer(serializers.ModelSerializer):
    commenter_pw = serializers.CharField(max_length=32, write_only=True, required=False)

    class Meta:
        model = Comment
        fields = ('email', 'author', 'url', 'content', 'ip', 'post_title', 'post_url', 'commenter_pw')