class UserFav(models.Model):

    """

    用户收藏

    """

    user = models.ForeignKey(User,verbose_name="用户",on_delete=False)

    goods = models.ForeignKey(Goods,verbose_name="商品",on_delete=False)

    add_time = models.DateTimeField(default=datetime.now,verbose_name="用户收藏")

    class Meta:

        verbose_name = "用户收藏"

        verbose_name_plural=verbose_name

        unique_together = (('user','goods'),)

    def __str__(self):

        return f'{self.goods.name}'

from django.shortcuts import render

from rest_framework import mixins,viewsets

from .serializers import UserFavSerializer

from .models import UserFav

# Create your views here.

class UserFavSetview(mixins.CreateModelMixin,mixins.ListModelMixin,

                     mixins.DestroyModelMixin,viewsets.GenericViewSet):

    serializer_class = UserFavSerializer

    queryset = UserFav.objects.all()

from rest_framework import serializers

from .models import UserFav

from rest_framework.validators import UniqueTogetherValidator

class UserFavSerializer(serializers.ModelSerializer):

    user = serializers.HiddenField(default=serializers.CurrentUserDefault())

    class Meta:

        model = UserFav

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

from rest_framework import serializers

from .models import UserFav

from rest_framework.validators import UniqueTogetherValidator

class UserFavSerializer(serializers.ModelSerializer):

    user = serializers.HiddenField(default=serializers.CurrentUserDefault())

    class Meta:

        model = UserFav

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

        validators = [UniqueTogetherValidator(queryset=UserFav.objects.all(),fields=('user','goods'),message='您已收藏')]