rest_framework序列化組件

from rest_framework import serializers

class AuthorSerializer(serializers.Serializer):

    nid = serializers.CharField()

    name = serializers.CharField()

    age = serializers.CharField()

# class BookSerializer(serializers.Serializer):

#     # 可以用source修改別名

#     xx = serializers.CharField(source='name')

#     price = serializers.CharField()

#     sb = serializers.CharField(source='publish.city')

#     test = serializers.CharField(source='publish.test')

#     publish_id = serializers.CharField()

#     # SerializerMethodField,可以指定一個(gè)方法

#     # publish=serializers.SerializerMethodField()

#     # # 方法名:叫g(shù)et_字段名,要傳參數(shù),參數(shù)是:當(dāng)前book對(duì)象

#     # def get_publish(self,obj):

#     #     # obj 是當(dāng)前book對(duì)象0

#     #     dic={'name':obj.publish.name,'email':obj.publish.email}

#     #     return dic

#     authors=serializers.SerializerMethodField()

#     # def get_authors(self,book):

#     #     #拿到這本書的所有作者

#     #     aus=book.authors.all()

#     #     # 拼出一個(gè)列表,列表中套字典,每個(gè)字典是一個(gè)作者

#     #     ll=[]

#     #     for a in aus:

#     #         ll.append({'name':a.name,'age':a.age})

#     #     return ll

#     def get_authors(self,book):

#         #拿到這本書的所有作者

#         aus=book.authors.all()

#         # 可以繼續(xù)用序列化類,來處理

#         auth_ser=AuthorSerializer(aus,many=True)

#         return auth_ser.data

from ap01.models import Book

# class BookSerializer(serializers.ModelSerializer):

#     # 必須寫一個(gè)內(nèi)部類,名字叫Meta

#     class Meta:

#         model = Book

#         fields = '__all__'

#     # 重寫屬性

#     publish = serializers.CharField(source='publish.name')

#     authors = serializers.SerializerMethodField()

#     def get_authors(self, book):

#         # 拿到這本書的所有作者

#         aus = book.authors.all()

#         # 可以繼續(xù)用序列化類,來處理

#         auth_ser = AuthorSerializer(aus, many=True)

#         return auth_ser.data

class BookSerializer(serializers.ModelSerializer):

    # 必須寫一個(gè)內(nèi)部類,名字叫Meta

    class Meta:

        model = Book

        # fields = '__all__'

        # 指定只取這兩個(gè)字段

        fields = ['nid','name']

        # 去掉指定的字段

        # exclude=['publish','authors']

        # fields,跟exclude不能連用

        # 指定深度(官方建議小于10,我給你的建議小于3)

        # depth = 2