# serializers.py
from jsoongia import Serializer, relationships

class UserSerializer(Serializer):
    ref = 'id'
    type = 'user'
    attributes = ['email', 'fname', 'lname']
    relationships = {
        'comment': {
            'serializer': CommentSerializer,
            'relationship': relationships.BelongsTo('user_id')
        }
    }


# views.py
from .serializers import UserSerializer

def get_something():
    serializer = UserSerializer
    data = {...}
    included = {'comment': ...}

    serialized = serializer.serialize(data, included)