class RecursiveSerializer(serializers.Serializer):

    def to_representation(self, value):

        serializer = self.parent.parent.__class__(value, context=self.context)

        return serializer.data

​

class TweetSerializer(serializers.ModelSerializer):

    replies=RecursiveSerializer(many=True)

    class Meta:

        model = Tweet

        fields = ('id','date_string','pix', 'likes','saves', 'retweets', 'replies')