REST功能模块-Serialization

from rest_framework import serializers
from goods.models import Goods, GoodsCategory

class GoodsCategorySerializer(serializers.ModelSerializer):    class Meta:        model = GoodsCategory        fields = "__all__"class GoodsSerializer(serializers.ModelSerializer):    category = GoodsCategorySerializer()    class Meta:        model = Goods        # fields = ("category", "name", "market_price", "add_time", "goods_front_image")  # 序列化知道字段        fields = "__all__"  #  __all__ 序列化全部字段