DRF的Serializer和ModelSerializer

class GoodsSerializer(serializers.Serializer):
    # 这里各个字段都会放到validate_data里
    def update(self, instance, validated_data):
        pass

    def create(self, validated_data):
        return Goods.objects.create(**validated_data)

    name = serializers.CharField(required=True, max_length=100)
    click_num = serializers.IntegerField(default=0)
    goods_front_image = serializers.ImageField()
    # ...

class GoodsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Goods
        fields = (‘name‘, ‘click_num‘, ‘market_price‘, ‘add_time‘)