day 82 Serializer类进阶三【ModelSerializer】
media 配置：
项目setting.py
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
路由：
urlpatterns = [
url(r'^media/(?P<path>.*)', serve, {'document_root':settings.MEDIA_ROOT}),]
结论：
1.插拔字段，省去了views中的跨表查, 插拔式默认read_only
2.ModelSerializer有Updata和create, 若没有特殊业务要求，可以不需要重写
3.extra_kwargs中：不想展现给前台【显示】-- "write_only": True
必须要传参 --- "required":True
moderserializer.py:
from rest_framework import serializers from app6 import models class BookModelSerializer(serializers.ModelSerializer): # 如果fields为[]自定义方式，必须需要将owen加入到自定义字段中,否则报错 # 另一种方式，迁移到model类中定义为property--- 建议使用【插拔式】 # owen = serializers.SerializerMethodField() # def get_owen(self, obj): # print(type(obj),obj) #<class 'app6.models.Book'> 书一 # return "xx" # <class 'app6.models.Book'> 书二 class Meta: model = models.Book # fields = '__all__' # 提供该表所有字段，不包含插拔字段 # depth = 1 # 自动深度 # exclude =['create_time', 'id', 'is_delete'] #不显示这些字段，不包含插拔式字段 fields = ['name', 'price','publish','authors','publish_name','authors_list', 'authors_detail_list'] # 自定义字段 -- 可以插拔字段, 插拔字段只参与系列化 # extra_kwargs中：不想展现给前台【显示】-- "write_only": True # 必须要传参 --- "required":True extra_kwargs = { 'publish':{ 'write_only':True, }, 'authors':{ 'write_only':True }, 'price':{ 'write_only':True, # 不会显示 'required': True, 'error_messages':{ 'required':'price不能为空' } } } # ModelSerializer有Updata和create, 若没有特殊业务要求，可以不需要重写 def create(self, validated_data): authors_list = validated_data.pop('authors') obj = models.Book.objects.create(**validated_data) obj.authors.add(*authors_list) return obj class AuthorModelSerializer(serializers.ModelSerializer): class Meta: model = models.Author fields = ['name', 'icon','price'] def create(self, validated_data): return models.Author.objects.create(**validated_data) class PublishModelSerializer(serializers.ModelSerializer): class Meta: model = models.Publish fields = ("name", "address", "phone") extra_kwargs ={ "name":{ "max_length": 6, "min_length": 3, "error_messages":{ "max_length": "姓名最长6位", "min_length": "姓名最短3位", }, }, "phone":{ "max_length": 11, "min_length": 8, "error_messages":{ "max_length":"电话最大11位", "min_length": "电话最小8位", } }, "address":{ # "write_only":True, } }
urls.py
# 一级路由 url(r'^app7/', include('app7.urls')), # 二级路由 urlpatterns = [ url(r'^books/$', views.Books.as_view()), url(r'^books/(?P<pk>\d+)/$', views.Books.as_view()), url(r'^authors/$', views.Authors.as_view()), url(r'^authors/(?P<pk>\d+)/$', views.Authors.as_view()), url(r'^publishes/$', views.Publishes.as_view()), url(r'^Publishes/(?P<pk>\d+)/$', views.Publishes.as_view()), ]
views.py 【含认证类】
from rest_framework.views import APIView from rest_framework.response import Response from app6 import models from app6.modelserializer import BookModelSerializer, AuthorModelSerializer, PublishModelSerializer # Create your views here. # 自定义一个认证类 class MyAuth(): def authenticate(self,request): print("我是认证类>>>>") class Books(APIView): authentication_classes = [MyAuth,] def get(self,request,*args,**kwargs): if kwargs.get('pk'): query_list = models.Book.objects.filter(pk=kwargs.get('pk')) else: query_list = models.Book.objects.all() query_data_dic = BookModelSerializer(instance=query_list, many=True).data return Response({ 'status':0, 'msg':"get ok", 'results':query_data_dic }) def post(self,request, *args,**kwargs): query_ser = BookModelSerializer(data=request.data) if query_ser.is_valid(): finshi_obj = query_ser.save() back_dic = { "status":0, "msg":"post ok", "result": BookModelSerializer(instance=finshi_obj).data } else: back_dic = { "status":1, "msg":"failed", "result":query_ser.errors, } return Response(back_dic) def put(self,request, *args, **kwargs): pk = kwargs.get('pk') query_obj = models.Book.objects.filter(pk=pk).first() query_set = BookModelSerializer(instance=query_obj, data=request.data) if query_set.is_valid(): ser_obj = query_set.save() back_dic = { "status":0, "msg":"put ok", # "result": query_set.validated_data } else: back_dic = { "status": 1, "msg": "failed", "result": query_set.errors} return Response(back_dic) class Authors(APIView): def get(self, request,*args,**kwargs): if kwargs.get('pk'): query_list = models.Author.objects.filter(pk=kwargs.get('pk'), is_delete=False) else: query_list = models.Author.objects.filter(is_delete=False) query_ser = AuthorModelSerializer(instance=query_list, many=True).data if query_ser: back_dic = { 'status':0, 'msg':"get ok", 'result': query_ser } else: back_dic = { 'status': 1, 'msg': "failed", } return Response(back_dic) def post(self,request, *args, **kwargs): query_data = AuthorModelSerializer(data=request.data) if query_data.is_valid(): obj = query_data.save() back_dic = { "status": 0, "msg": "post ok", "result": AuthorModelSerializer(instance=obj).data} else: back_dic = { "status":1, "msg":"post failed", "result": [] } return Response(back_dic) class Publishes(APIView): def get(self, request, *args, **kwargs): query_list = models.Publish.objects.filter(is_delete=False) query_ser = PublishModelSerializer(instance=query_list, many=True) back_dic = { "status":0, "msg":"get publishes ok", "result": query_ser.data } return Response(back_dic) def post(self,request, *args, **kwargs): query_ser = PublishModelSerializer(data=request.data) if query_ser.is_valid(): new_obj = query_ser.save() print(new_obj) back_dic = { "status":0, "msg":"publish post ok" } else: back_dic = { "status": 1, "msg": "publish post failed", "result":query_ser.errors } return Response(back_dic)
