spejstore/storage/serializers.py

from django.contrib.auth.models import User
from storage.models import Item, Label, Category
from rest_framework import serializers
from rest_framework_hstore.serializers import HStoreSerializer


class ItemSerializer(HStoreSerializer):
    categories = serializers.SlugRelatedField(queryset=Category.objects, many=True, slug_field='name')
    owner = serializers.SlugRelatedField(queryset=User.objects, slug_field='username')
    taken_by = serializers.SlugRelatedField(queryset=User.objects, slug_field='username')
    class Meta:
        model = Item
        fields = ('uuid', 'short_id', 'name', 'description', 'props', 'state', 'parent', 'labels', 'owner', 'taken_by', 'taken_on', 'taken_until', 'categories')

class LabelSerializer(serializers.ModelSerializer):
    item = ItemSerializer(required=False)
    item_id = serializers.PrimaryKeyRelatedField(queryset=Item.objects, source='item')
    class Meta:
        model = Label
        fields = ('id', 'item', 'item_id', 'style')