from rest_framework import serializers
from rest_framework.validators import UniqueTogetherValidator

from .models import UserFav
from .models import UserLeavingMessage, UserAddress
from goods.serializers import GoodsSerializer

class UserFavDetailSerializer(serializers.ModelSerializer):
goods = GoodsSerializer()

class Meta:
    model = UserFav
    fields = ("goods", "id")

class UserFavSerializer(serializers.ModelSerializer):
user = serializers.HiddenField(
default=serializers.CurrentUserDefault()
)

class Meta:
    model = UserFav
    validators = [
        UniqueTogetherValidator(
            queryset=UserFav.objects.all(),
            fields=('user', 'goods'),
            message="已经收藏"
        )
    ]

    fields = ("user", "goods", "id")